Build your own portable POWER STATION (1200w, USB-C and MORE!)

[@DIYPerks]

Leave any questions here and I'll answer with an FAQ edit to this pin! Also don't forget to check out this video's sponsor - Private Internet Access: www.privateinternetaccess.com/DIYP

[@Sandeee]

If it's heavy, you can try making a trolley mini luggage type version as well

[@BEdmonson85]

Dean's connectors seem a bit outdated to me, just a personal opinion of course. Have you ever tried out Anderson Power pole connectors? They have multiple current rated versions and the connectors' pins are fully shrouded on both of the mating sides, so it would be extremely difficult to get an accidental short circuit with them. I'd love to hear your thoughts.

[@Burssty]

That's such a small battery pack but it lasts so long... Are there any consumer products like it?

[@philipnelson5]

What did it cost you to build?

[@Smoke---]

Is 1,200 watts the same as 1.2 kWh? Also, if you were to switch the three outputs of 12, 24, and 24 volts, how many volts/amps could this thing safely output? I don’t know much about electricity, but I am trying to learn, and this inspired me!

[@karsteinvolle]

Never gonna build any of this, just here because I enjoy watching people build stuff with a legendarily joyful demeanor.

[@lil_storyz4230]

Ik a lot of these videos exist about al types of stuff and 90% of us will never do it 😂 I use to watch stuff about iphones and now I do that Buttt I never thought I would

[@brimster-valorantaggressiv3419]

Absolutely this guy is a total legend, he can be the host of a kid's show easily like blues clues

[@liammchugh9439]

I'm interested in electronics so that's my I'm here. I doubt I'll ever build thus tho

[@MaxUgly]

@@lil_storyz4230 I love watching Louis Rossman videos but have none of the skills or equipment to do that stuff. I get it.

[@macehead]

That's too real man. I choose to stay in the fantasy world where I say I'm going to make this stuff but find mundane reasons that stop me. "Ugh I was totally about to build that DIY 4k projector but I really need to change that 1 single air filter in my house. Dont want to over extend myself.

[@kjamison5951]

Please appreciate that, not only does Matt realise some of the most awe-inspiring products that designers envy, he develops everything to millimetre precision, records the entire process, generates animated content, scripts his videos like a boss and edits the entire ensemble like a work of art. Kudos, Mr Perks!

[@alexstone691]

He's a one man engineering team

[@gregkrazanski]

pretty neat! not bad!

[@R-Tech]

@@gregkrazanski Nice!

[@GingerBeker]

that's the reason becouse he have more then 3 million subscribers.

[@cosette14234]

@@Rama-wr9yx dunno

[@noahmorley788]

mr perks achieved something many cant do *non-repetitive content* edit: thanks for so many likes lol

[@CrimsoNaga]

Hear Hear

[@goldensilence5841]

Hear Hear

[@chrisrnz]

@@goldensilence5841 I see what you did there.

[@sanjitkadam8336]

This is something that many people cant do

[@sanjitkadam8336]

@@chrisrnz haha

[@heidisparklebottom]

Imagine, you're walking through the forest, you hear three beeps in the distance, several minutes later you stumble into a clearing and see Matt sitting next to a microwave happily eating pasta: 17:50

[@DIYPerks]

🤣

[@_BangDroid_]

You rolled a 20

[@ihatearial]

Imagine that also an Italian hear and follow the beeps and see he cutting the pasta.

[@Qgal5kap123]

nobody should be happy about eating microwaved food.....

[@bknesheim]

@@DIYPerks So no you really need a microwave that can be flat packed and quickly assembled on the spot. ;.)

[@solanumtuberosa]

Im starting to think this guy single-handedly keeps the aluminium industry alive.

[@MyProjectBoxChannel]

And the brass industry 🤣

[@kaushalsuvarna5156]

And the correct pronunciation of aluminium as well 🤣

[@Michaelfayvor]

😂😂😂😂😂

[@omniyambot9876]

also wood

[@kenmore01]

@@kaushalsuvarna5156 In America, we pronounce aluminum properly too. It just doesn't contain the extra "i."

[@Scanlaid]

Darn it, slow down! I'm still working on the projector 😂. This would be such an awesome pairing with that. Plus the Tech Ingredients foam speakers..... Entirely portable movie theater, anyone?

[@k1ortia]

Hold my beer...I'm still on the sun blaster.. 😉

[@stevetobias4890]

Portable theatre for camping, just need a projector and a roll out screen.

[@Ahri--]

I wanted to try the projector as well, it seems like a super fun diy project

[@AndrewTateOfficial_]

@@Ahri-- true.

[@mattflowerstorm]

Hold on! I'm still on the macro lens!

[@PAULOFDX]

Although I would never personally attempt building these projects myself, It amazes me to see how easy you making look. All your projects are absolutely beautiful. Your videos are very well made and are also visually and audibly therapeutic. I really enjoy every one of them! Great job! 👏

[@misskiwii]

I love how he makes everything so entertaining to watch. I'm probably never gonna build any of the stuff he makes but it's so good to watch

[@gencayturan7359]

mood

[@cosette14234]

when i get some money i might try to build the pc built in to the desk and this as well, and some other stuff that i find usefull at that time

[@imperialboy]

I share the same sentiment. I love to watch the videos, but I’m very sure I won’t end up building any of the projects. I really wish I could buy some of these builds though… the hidden desktop and artificial sun especially…

[@DonCarlos590]

Same here. I know id probably cause an accident. He seems like an expert.

[@FriedHam]

Just think about handling this amount of lithium battery horrifies me lol. It can be extremely dangerous without proper knowledge and tools

[@ebrahimseedat5554]

Man this guy has PASSION for what he does. Such quality videos. Such hard work. Even the persona he embodies for his videos must take so much energy.

[@DIYPerks]

Parts links have now been added to the description!

[@marvinthielk]

Do you have an approximate cost for the build?

[@GhostSlayerYT]

@@marvinthielk lol are you gonna build this XD

[@EagleFPV43]

@@GhostSlayerYT what's wrong with it?

[@GhostSlayerYT]

@@EagleFPV43 it's gonna be pretty hard and time taking, I think most of the people just watch these videos cause they look cool

[@Nylander2004]

What about a wiring diagram

[@me7821]

this guy is the living embodiment of the word careful and i love it

[@COSCOSBEATS]

I keep saying this: This guy is outrageously talented

[@silvervens]

Mhrmmmm. (Yes.)

[@LearnWithYender]

Ok

[@jonathanperez8404]

Definitely

[@ScreamingSutch]

I have fallen in love with this channel, dude doesn't overact like he's 10 years old, he always explains himself clearly and concisely and is fully entertaining and informative. I'm gonna watch everything you post from now on

[@Project-Air]

Those graphics were sleeeeeek!

[@DIYPerks]

I burned the midnight oil for those! :D

[@Project-Air]

@@DIYPerks It shows man!

[@ehrensto]

Simple, stylish and effective!

[@rossclutterbuck1060]

@@DIYPerks that was your mistake right there. Why burn the midnight oil when you have your artificial sun?

[@abeginnerspov5968]

@@rossclutterbuck1060 I see what you did there.

[@domw3239]

Can you imagine this guy converting a van. It's like anything he touches is perfect.

[@typeofcrayon]

Everything he touches turns to brass

[@Hare_deLune]

The magic of film editing. ~_^

[@YOEL_44]

Rich rebuilds is quite messy and the van that's working on has some nice finishes, thing is, you cannot get going and see what happens, you have to plan it really well

[@XBojangsX]

holy shit it would be epic

[@OtherDalfite]

The man doesn't miss!

[@davidrobertson1980]

Man this is the most beautiful perfect power pack build on the entire internet, well done, you are AWESOME!

[@aith7rios]

Whoever takes care of your backyard needs to start a DIY Garden channel. *edit you could call it DIY Parks

[@suhealj6997]

Plot twist. He does it himself

[@sebastianjohansen2142]

I assume he does it himself but thinks it’s too boring to make videos about.

[@CaveyMoth]

@@suhealj6997 You could say it's one of his DIY perks.

[@suhealj6997]

@@CaveyMoth the reply I've been waiting for 🤣

[@roodick85]

It's most likely him

[@felixpfi3299]

The only times, he goes outside: - He has built a battery pack - He has built a comically large flashlight

[@gorillaau]

Dangerous things are found outside, such as snakes and things that bite.

[@notahotshot]

@@gorillaau Can confirm. Source: I am outside, and I bite.

[@Flashbang_Photo]

@@notahotshot nomnom

[@LeslieDugger]

Also, outside for the Sound panels build

[@devrimdogaaydemir]

And he has built a boombox.

[@Kernow76]

Next week : “Building a portable power station completely in brass”

[@reggiep75]

or a miniature nuclear reactor with preying mantis engineers fed on the best insects possible!

[@stevetobias4890]

Steam punk style with a kick of modern power

[@abz2995]

Brass looks good and smart 😂

[@GenialHarryGrout]

I'm hoping he will build a cold fusion reactor out of recycled corned beef tins

[@LJGrindewald]

With water cooling 😂

[@Devydon]

Not only are you builds and ability to teach incredible, but your eye for photography and production are top notch.

[@russelltalker]

50 Years from now: How to build your own radioisotope thermoelectric powered ion propulsion hover scooter from a salvaged Mars rover.

[@bowdiddly6172]

Why would they bring a junk mars rover back to earth?

[@sawc.ma.bals.]

@@bowdiddly6172 I guess he would go to Mars to salvage it

[@bowdiddly6172]

@@sawc.ma.bals. I guess that makes more...cents...lol

[@russelltalker]

Because everyone thinks fifty years from now we're going to be living on mars

[@bowdiddly6172]

@@russelltalker oh, I know they do. Not a chance. In 50 years, I'm guessing most people will be lucky if they are still alive on Earth...hope I'm wrong.

[@peter660]

He really loves his aluminum and wood grain... and threaded inserts.

[@CaveyMoth]

Can't forget the brass! Or carbon fiber wrap(Amongst other vinyl wrap finishes).

[@manytrickpony695]

Aluminium.....

[@kanishcktewatia597]

every one of his videos have a "AND aluminium is perfect for this" moment

[@Carrotsalesman]

Yeah high quality, atheism pleasing materials is his jam

[@joshua321654]

This is not just high level DIY, everything he does is ART. I wish I could buy the stuff he makes..

[@roncheaters]

I could definitely use this in my meth-cooking trailer.

[@mrN3w7]

As long as you have will to learn... you can build you own... nobody stops you :).

[@polk-e-dot8177]

I mean as long as you follow his instructions you can make these projects AND the more of these you do, the more you learn, the better you are at doing your own projects

[@Shadowmaster625]

those are really nice batteries too. My Molicel P28A 18650 batteries have outprformed all the so called "best" batteries on several review sites

[@KingNast]

I'd make one and sell it to you for the cost of parts and shipping, but it wouldn't be cheap. Just the batteries and management board comes to 484£ ($684 USD)

[@seymourpro6097]

As you are making a "Briefcase" shape why not progress to having an opening briefcase that contains some solar cells. Maybe just a few watts but that would be of use do simply delay the fall to zero, or enough to maintain full charge while switched off. Most emergency systems fail during lack of use and due to lack of use..

[@emkay1182]

actually a good idea. Could hide expandable very large solar panels in there :D

[@burgle66]

The quality of these builds is more like bespoke manufacturing than "DIY", yet straightforward enough to feel doable. Really cool.

[@levividal5311]

Yes. Bespoke electronics. That's the word.

[@TechnoL33T]

I really want to learn how to achieve this level of polish in building stuff from scratch.

[@rjokem]

Almost everyone: wheres my charger? Matt: in todays video we'll build an arc reactor using simple electronic scraps and a doorknob.

[@moltenhydrogen2218]

tony stark built this in a cave! with a box of scraps!

[@rolandhazuki8787]

Sorry sir but I'm not Tony Stark

[@mariadaferera]

Exactly LOL

[@rmskrathnayake]

@@rolandhazuki8787 lol

[@daddyabdulla]

Modern Day MacGyver! Loooooovvvvveeee iiittttt!!!!!

[@ma.fouani]

I don't know what to call this! I've been researching DIY batteries and power systems for weeks now; and nothing can be as professional and sleek as your work! I just love watching your brilliant work! thank you

[@catch22frubert]

It's called a massive power bank lol. But seriously, it looked like it was made with my personal favorite lithium ion batteries, Molicel P42A'S which can both output about 30 amps per cell continuous until the pack overheats, or they can do around 20 amps continuous basically forever if you have some airflow. It was in a 12s8p configuration, so a 33.6Ah, 44 volt nominal system, which is equivalent to a 1.47kWh battery. It's got a lot of energy and very good output capabilities since the Molicel P42A cells are robust high output cells. I'm not positive why 12s was used in this application, but maybe it's more common than I thought? In the USA, we are more likely to run true 48v systems which means 13s lithium ion set-ups or 16s LiFePO4 set-ups. It just seems like we have more stuff available to get the most out of 13s systems, and there are more inverters and charge controllers that work with 48v nominal equipment. There are plenty of batteries, power banks and Solar generators that have 1.5kWh of energy capacity, so there are no shortage of options if you look around. There is a very powerful pack at Jag35.com that has this exact setup for $100 per module. It's already in a package, you just have to wire up your own BMS for it. You can run several packs off of one BMS. Just get something quality like the 300a BMS with Bluetooth from Batteryhookup.com or something from a reputable website. No cheap eBay stuff. You can find even cheaper solutions using cheap 44v and 48v battery packs from Batteryhookup.com and Jag35.com. those only require slight modification or integration if you already have a 44v or 48v Victron system or a rack mount system that includes a BMS for every battery pack.

[@Remi_lulz]

i know its a little late but i found this while looking for diy solar generators

[@samgibson1683]

I love love love how accessible you make your projects. As someone who is constantly dreaming up new things to tinker and make, watching someone carry out ideas like this to the level I imagine myself doing it (imagine being the key word there lol), your channel satisfies the itch to create while also saving me a failed project and frustration.

[@amimemaybe]

Such an inspiring build! I work with a film-crew, and frankly, we're on the move a majority of our time with no socket outputs in reach to charge our equipment. I do have background as an Electrician, and the parts for a build like this has now been ordered! Thank you so much for giving everyone the huge inspiration you do with your build.

[@thistled0wn]

As cool as this built is, it is not financially viable IMHO, as the parts as well as the time spent to manufacture the items willl be more than any comparable commercial powerbank. For film and Video production, you should take a look at the comercial available "solart" generators from Jackery, Bluetti, Rocksolar and the likes. Maybe even have a look at manufacturers like Golabs who offer LiFePO4 powerbqanks that are supposed to have a much longer life expectancy (3-8 times) than standard LiIon ones.

[@gataness]

@@thistled0wn LiFePO4 Is the way to go imo

[@jimmysyar889]

@@gataness agree

[@4pThorpy]

This is one of those things where you start it thinking "ok, I could do that" and then every minute afterwards you feel more and more ashamed of yourself knowing you'd fuck it up and burn the shed down

[@jishan6992]

That's exactly what I was thinking!!!! I was like this is very reasonable and I could see myself making it. But than he pulled out spot solder.

[@silvere36]

Went down hill quickly. I'm going to Amazon.

[@henloitsdiego]

@@jishan6992 spot welder did it for me too !

[@jishan6992]

@@henloitsdiego I don't think less than even 1% person would actually attempt on making what he makes but I still enjoy his content and things he makes but it would be better if he presented it as an experiment rather than DIY, because I mean come on it would be costlier to get all that tools and making something rather than buying the manufactured product

[@heedmywarning2792]

More power!

[@ryanchappell5962]

I'm pretty sure Matt is from another galaxy. He's brilliant but also doesn't seem to be "in his head". It's like he's just having fun playing with the technology that's available on earth. This is definitely my favorite channel right now.

[@infected7258]

Perfect timing, recently we’ve had really bad storms here in Texas and a lot of houses have been out of electricity for about a week and now another storm will only make it more days without electricity

[@Favmir]

This guy's projects just oozes professionalism. I love it when these videos include important (obscure) safety guidelines, it gets my respect.

[@teakettle7021]

The reason I love these videos so much is that they’re delivered in such an approachable way to keep beginners engaged but are advanced enough to teach enthusiasts loads of new tricks too. Really can’t get enough of these, thanks!

[@הרבוש]

No they not who gqve moeny to buy new wleder? I trying find diy chepaer , its cheper to buy power battrey new

[@PureChaos69]

This has EASILY been the best, most detailed video I've seen on wiring these types of cells. I've looked into it before, for a custom battery pack for an electric bike, but was always found other tutorials just breeze past some seriously important things

[@samuelolteanu]

Definitely NOT detailed enough for doing it yourself. Mising schematics at the very least. Unpopular opinion here but diy perks is becoming more of do it myself only showcase.

[@sharp14x]

@@samuelolteanu Especially with nothing in the description besides an advertisement.

[@secretscarlet8249]

Thanks for the safety warnings and the visual animations of the battery charges. Makes things easier to understand. 🙂

[@DuckyBee156]

Admire how even 'shouting' after a victory is done in a very respectful and humble tone/volume. This dude could deliver bad news with that voice and you'd thank him for saying it. Once again, lovely video/build :)

[@Mango_Puffin]

Man respects his neighbors. Gotta love it.

[@BadNewsNil]

the scenes where Matt was outside was actually shot at night he's just using his artificial sun for the illusion of day time.

[@rogeraustin7185]

- also powered from this new battery bank.

[@razam6608]

How do you know?

[@കുട്ടൂസൻ-ദ1ണ]

@@razam6608 supposed to be joke right ?

[@victorlonginov6127]

Nope he is serious

[@razam6608]

From what I can see in the scenes, it is probably real daylight. If you have the time of the video in which it can be clearly seen that it is the artificial sun, show me pls.

[@scotty7845]

New to the channel but the production quality here is stunning. You really deserve every view, like, and subscribe earned here. I know you have mine. From an apprentice electrician and hopefully one day, electrical engineer, outstanding work.

[@not_enoughmana]

As someone who complains often about the high prices of these portable battery packs, I now know why they cost so much 😮 Great build! I wish I couls buy one of these.

[@marceloeducosta]

I must say I would *easily* buy this thing if it was available for purchase.

[@tek5358]

You absolutely can, they're sold as solar generators, but they are not cheap

[@hatem0]

two kinds of people, some purchase and some design/build. I would rather prefer to be builder than passive purchaser. agree?

[@erkinoztekin]

@@tek5358 this project is still expensive as a DIY project. Batteries themselves cost around $550 when you buy in bulk (over 750 dollars when you buy them individually), BMS board cost around $200 dollars. Not to mention spot welder, leather pieces, voltage regulators, lcd voltmeter and bunch of other stuff.

[@jozosaravanja1626]

@@hatem0 Some just don't have time nor desire to become builder and just enjoy videos like this. Some are better at tech, some do metal work and wood projects better etc. Not everyone can learn or have time to learn every type for DIY projects. So please don't act all mighty and above others just because you do something and they don't.

[@anthonypelchat]

​@@erkinoztekin You can easily find items much cheaper than that. I found these exact cells for just over $400, but you could get similar capacities for cheaper. I quality Daly BMS (without bluetooth) is only around $30 for 40 amps, which is all he is needing (that's 2000 watts). If you shop around, you could likely build something similar for under $400. Building supplies like the spot welder, cutting tools, etc would of course be extra, but you only have to buy them once and they can be used for several projects. If you are only going to build a single item this way, then it likely wouldn't be worth it. But if you think that you will build other items, then this is far cheaper than buying outright.

[@AngeloXification]

All your projects are so professionally done, I wish I could buy everything

[@2009samiy]

" I wish i could MAKE* Everything "

[@TheDanaYiShow]

The quality of these videos is AMAZING, it's like a TV show where I learn to build things I'm almost certainly never going to build, awesome video :)

[@techandfun4906]

Very true everything is way out of budget 😅 better buy it or find a sponsor

[@dmeditz8100]

but he should make manual and PDF fir us to remember thing's like important warning its not safe to play with risky expensive things.

[@massterrbarber]

This is professional work. This is like very professional work like you should be building batteries for Tesla. I know this is a three year old video, but there’s no one out here building batteries like this. I mean, that just looks really secure and really safe. I would definitely trust a builder like you if your name came on a brand I would definitely buy it great content learned a lot by understanding. Thank you.

[@noitibmar]

I would love to see a video or two about how you come up with these ideas or figure out how you're going to design and make it all work. Absolutely incredible as always

[@dougle03]

I'd like to see the projects that didn't make it to filming stage. One thing is for sure; these take a lot of work and are certainly not as effortless to pull together as Matt make it appear. Hard work does pay off, Matt is proof of this...

[@MI_44177]

Liking this video isn't good enough. I just want to say that I respect everything you're doing. This is a very helpful video especially since I live in a country with many power outages. Thank you sir for your dedication and effort.

[@zgillet]

I'm beginning to realize that the best way to do things yourself is to own a professional manufacturing facility.

[@anandkumaryadav3995]

Good😂😂

[@electroquests]

I agree

[@Joostuh]

You either pay for labour or you pay for tools. DIY is a hobby, not a cost saving method.

[@zgillet]

@@Joostuh In his latest video he ionized Nickel to make a magnet bigger. That's lab stuff.

[@SteenG3yL]

@@zgillet Still, he did that with mostly household items and it worked out perfectly. Most of the time, it's not so much the tools that make the difference, but the creativity and genius of the brain that's operating them that does. You'd be surprised with what you can make relatively simply.

[@BunkerSquirrel]

your obsession with attention to detail here is admirable. outstanding work!

[@kepagu]

I can't wrap my head around the fact that that little suitcase-sized box can power a combi fridge-freezer for two days.

[@kentaltobelli1840]

Here's something else that may blow your mind: that "huge" amount of energy can only get a car up to 80 mph or take an electric vehicle 2 miles. Transportation wastes ridiculous amounts of energy.

[@krzosu]

fridge is not working 100% of the time at full power- it only uses larger amounts of power at time intervals when it is actually working towards lowering the temperature after that is done there is usually a large time gap betwen such cycyles. This means relatively small bank can keep the fridge working for relatively long times.

[@carbon1255]

@@kentaltobelli1840 You say "wastes" and certainly inefficient commuting is a big drain, but you can buy petrol mopeds that are more efficient than a cyclist in CO2 emissions and obviously food cost to petrol. And it obviously won't blow your mind if you have ever tried to PUSH a car for two miles.

[@afiqfitrirusli490]

You haven't watched jehugarcia builds😂😂😂 he can literally fully charge a Tesla

[@Chuckiele]

@@carbon1255 But even if you need a family car, compare its power consumption to the entire family house.

[@tensevo]

I can honestly say, one of the few channels, that I get genuinely excited about new content. Truly great craftsman and inventor.

[@flummox3d]

Imagine going to a restaurant and asking "do you mind if I charge my powerbank here?" and upon receiving a positive answer, whipping out this bad boy.

[@ColdWarriorIndian]

Imagining this and I can already see them charging me a 3 figure sum for just a beer !! 🤣 Lol

[@HUMBLE_JAY]

bro im speechless to be honest this is a master piece he thing can push a fridge bro that was surprising come on guys give this guys his props he deserve it

[@SANTINIIO]

It's been mazing seeing how clean your builds have gotten over the years. I would love to see a video on how you decide what parts to get and how you design everything before building your projects.

[@Rob_65]

Very nice battery pack 9:50 you are not only electrically insulating the contacts but you are also thermally insulating the battery pack. This means that any heat that develops in the battery is not able to leave the pack as well as it should. High energy packs are often lined with special silicone like material that directly attach to the metal case or even a heat sink. Especially when delivering high power over longer times it is very important to do this. Also, make sure there are a few temperature sensors to the BMS such that the BMS can switch off the battery when the temperature rises too fast or gets too high. As a safety warning: never ever suggest that people use old or refurbished cells to create battery packs with multiple cells, especially when those cells are placed in parallel. Any two cells that are placed in parallel will charge/discharge each other when these do not match. Not only the battery voltage but also the cell's capacity and internal resistance are very important. If these are too far out of alignment, the better cell will start charging the other cell(s) with uncontrolled/unlimited current (or as much as the better cell or cells can deliver). The cells you use can deliver up to 45 A per cell (not 30 A as stated by fogstar) when short circuited. So if one of these cells fails, you have a possible fire hazard. To prevent this happening, the BMS monitors the batteries over their life time and the BMS will shut down (and refuse to charge or discharge) the pack. The BMS will/should also monitor the temperature of the battery and with a large pack like this, there should be multiple temperature sensors on different places in the pack and with a pack like this I prefer to use 2, or even better 3, sensors. Note that even most electronics engineers have no clue on the use and care for rechargeable lithium cells. I have been working on multiple types of rechargeable technologies and have designed and built BMS systems on and off for the last 20 years. I know enough about Li-Ion, LiPo and LiFePo to know that I am not an expert on this ... When making a large pack with parallel cells, I would stay away from the BMS you mentioned in choice 2 and 3 (the "Small Daly BMS"). I base this on the label on the product that shows the text "with balance". The "M" in BMS stands for "Management" and that involves not just balancing but also monitoring the state of charge, temperature and capacity delivered over all charging cycles. As soon as this suddenly changes, the BMS must warn the user, at least by disabling the battery pack. If a manufacturer feels the need to specifically note balancing on the label this suggests to me that this might most likely just be a protection circuit with balancing. These protection circuits do not contain any electronics to "manage" large battery packs. The TinyBMS is the only sensible choice for this pack; it monitors voltage and current of each cell stage, monitors SOC, keeps track of number of charge/discharge cycles, starting capacity, last cycle's capacity and I think it will even show you the "health state" or "age" of the battery which predicts when your battery will fail. The TinyBMS also uses the temperature sensors to prevent charging when the battery is too cold. Future firmware updates might even contain a special features that start pulse-charging or slow charging when cold and only switch to full current when the battery is up to temperature. About "refurbished" batteries: Refurbished cells are a myth, these are just old cells recovered from a pack where other cells have proven to be faulty. Never ever combine those old cells to create a parallel pack because you do not get any clue on the age or life expectancy of such cells. You can buy things like "refurbished" E-bike batteries. Those contain NEW cells that are placed in the old housing with the existing BMS. The BMS is reset in order to keep track of the new cells states like current capacity and pack age. Such refurbished packs are as good as new ones from the factory. Some brands will even recycle BMS systems themselves, they have a system where a dealer gets a discount on a new battery when returning the old one.

[@dillannokes5206]

I feel like I just read a book

[@theobserver314]

@@dillannokes5206 Good.

[@markwashington7731]

At first I was thinking" I am totally reading this long comment" then after the first paragraph I thought maybe I'll try to scroll down and see hos long it's going to be. Then realised even typing this long comment is taking less time so i stoped reading

[@roose1346]

thanks for the comment, very interesting

[@hondayamaha3]

Thanks for the knowledge. I'll start applying this. May I ask one thing?is it safe to use refurbished LiFePO cells for powerwall and solar? It is already popular. We don't use temperature readers or heat sink since the bigger cells doesn't heat much compare to smaller ones like 18650 lithium cells. And we usually put in 4s and parallel in around 10-20 4series cells is this safe? We use refurbished cells 32650 lifepo

[@Minimelkav]

All of your projects have what feels like mass-production level quality! Everything you make is user friendly, intuitive, and safe. Have you ever thought of working in/for a prototyping lab? People with your skills make BIG money in product prototyping.

[@dougle03]

There is very little money in prototyping, at least in the UK.... Unless by big you mean a sub £50k annual salary...?

[@puneettiwari6651]

I can only imagine of doing all the work by myself like you do. You work really hard for making a single project. You not only makes a project but inspire others also. Thanks

[@toptnc]

Honestly I'm just following the channel hoping for the day that Matt builds his own functional death star. In brass, of course.

[@ejeckk]

As I was watching the video I was asking, "What about a display monitor?" Then later I see you did that. Then I asked, "What about the components that don't have their own internal fuses?" Suddenly, you're installing fuses for those components. Get out of my head, man! Great project! Fantastic job.

[@dougle03]

Always remember; fuses protect cables, not devices... Fuses should be as close to the source of the power as possible.

[@solomondenning8574]

"Stay tuned next week when I make a DIY Offshore Petroleum Plant, out of brass."

[@CaveyMoth]

The secret is in the repurposed laptop parts, which will serve as the foundation for the refinery.

[@ljy82]

I love the IDEA of a microwave oven that has a built-in rechargeable batteries. Again your videos are so TOP NOTCH and very enjoyable to listen and to watch. Almost like a TV personalities

[@nazilali]

FYI you’re the only subscribed channel that has notifications turned on when you post a new video 😎

[@PME]

Same here :o

[@richardbajuzik2445]

Same here

[@Stellar-Cowboy]

Then you don’t know many youtube channels lol

[@nazilali]

@@Stellar-Cowboy I’m actually subscribed to few hundred, but his channel to me is the only one worth it for the notifications

[@nazilali]

@@jamesg7016 I like to think I will eventually make something myself watching his videos.

[@AndreChaosweapon]

coming next: a solar panel charger to this portable power station!

[@kaamn1829]

I was just considering that! the only problem is that most solar panels are super inefficient and seem unlikely to be able to fully/properly charge this thing, but oh man, if he could do that- the applications are fucking insane! it can charge your devices for weeks with camping, so pair that with solar power and you have the _perfect_ road trip which can sustain you easily and a battery that you can maintain!!!

[@Mr539forgotten]

If this kind of solar power conversion were even remotely possible, we would already be running around in Tesla super cars that charge faster than they drain with a single solar panel on their roof. If these kinds of energy conversion rates were even close to reality the whole world would already be 100% solar and everyone would power their house from a panel the size of a door.

[@somenygaard]

@@Mr539forgotten he didn’t say a portable solar panel charger.

[@roncheaters]

Good Idea.. probably take a whole day to charge. There are panels out there that are plenty capable. Next-level smartphones will no-doubt have this feature, its just a matter of finding the space in such a small and thin device.

[@jin4092]

I want To make one too

[@chidori0117]

Something to note: with cell sizes like that and a power module this big you are dealing with a lot of energy. Putting this in a case like that without any safety measures means that there is a very high risk of thermal propagation inside the module. This means if one cell has a safety event (short circuit or whatever) the heat produced will likely trigger the rest of the module causing all cells to go into thermal runaway. This should be conidered when you are storing and using the thing. Dont leave it in a hot moist boiler room or hot car...

[@kevinsono]

That's probably why he added fan and connected the Bluetooth to it so he can check the batteries activity in real time.

[@StaticVapour590]

Exactly. I even commented about why it does not utilize any sort of relays for high-current rails and how is the cell cooling / BMS cooling possible in such "sandwich-suitcase" build

[@keigun5546]

As well as having the Deans connectors the wrong way around, just having them next to each other doesn't prevent someone plugging in just one of them. Which you might want to do if you use a lower power device with just one Deans connector on it.

[@SciMajor1]

Excellently done. I love the safety features you built in. My only concern is the complete lack of airflow capability in the battery compartment. Lithium Ion batteries can be damaged by heat. If the pack is running anywhere near it's limit (1200 W) the batteries have to be getting significantly warm. For example, earlier generations EV's like the Nissan Leaf had a similar design issue (limited airflow over and around the batteries) that resulted in very significant degradations in capacity over a relatively short period of time. Newer EV systems have active cooling systems which greatly mitigate the overheating issue. Regardless, your design work is excellent. I have a degree in Electrical Engineering and have worked in the design and manufacturing of multimillion dollar semiconductor manufacturing equipment and, other than the heating issue, I couldn't have designed it better. Well done.

[@leonlowenstadter9223]

Would integrating space for air flow and one or two a simple PC ventilators help?

[@Gojirosan]

"Battery Powered Microwave" is an album title waiting to happen.

[@fallinginthed33p]

More like a band name. Edgy electronic death metal.

[@voidwanderer7138]

I was going to make a joke: "all you need for low cost high quality batteries is a ski mask, the nearest tesla in the neighborhood and some basic tools shown here" however seeing you legit use up an entire tesla for parts would be an amazing sight to see.

[@Smoke---]

See if you can find a Nissan Leaf or Chevy bolt in a junkyard lol

[@gabrielflorit4470]

Look at Jehugarcia youtube channel. He's the lithium ion battery god on KZbin and he did a powerwall with Tesla batteries

[@SockyNoob]

@@Smoke--- more likely to find Teslas in junkyards lol. But I imagine it's way easier to scavenge parts off other EVs since Teslas are super anti-repair and make it hard af to get shit out of it.

[@nada-nada-1234]

@@SockyNoob doubt junkyards leave the batteries in, fire hazard and such, maybe they sell them off tho

[@swecreations]

@@nada-nada-1234 Yep, a Tesla battery pack is worth like $10k used as well, so they won't just leave it lol

[@detroxx56784]

This has to be one of your coolest videos ever! Just after the remote Lego camera focus system of course 😁

[@DIYPerks]

A true fan! :D

[@michaeleccher4068]

Brilliant, I’ve been wanting a crossover between an emergency car jumper and something which also be used as a portable power station for off grid or boondocking! Thank you, excellent video and contribution.

[@xdevs23]

It might not be suitable as a car *jumper* as the current required to turn an engine is pretty high and this might not be able to deliver that but you can surely charge a car battery.

[@kjamison5951]

Matt: “You might remember a portable power pack I built, from a previous video. Today I’m going to pair it with this bicycle to create a custom E-bike capable of travelling at 30 miles per hour at a range of 200 miles…”

[@Hendlton]

If you're actually interested in that, there's a similar video of a dude making a solar powered bicycle that can go forever as long as there's sunlight. I can't link it here, but you can probably find it if you try.

[@hoveringgoat8061]

@@Hendlton peters bike?

[@Hendlton]

@@hoveringgoat8061 Yeah, it's him. It's been a while since I watched, so I couldn't remember his name.

[@3v068]

I am absolutely blown away at your creativity for some of these projects. Its not always conventional, but the methods and things you do have a purpose that suits your uses well and it gives me a ton of respect for your building. Keep up the good work. I hope to follow along to some of your perks soon.

[@boommaker5992]

I’d strongly recommend anyone doing this to have kapton or some other kind of electrical insulating tape to cover exposed battery terminals that aren’t being welded to and have kapton on until the side walls are attached

[@shammyh]

Completely agreed. He also shouldn't be spot welding a bus bar directly to each cell.

[@Donnerwamp]

@@shammyh I've got no clue about battery packs, why is that bad?

[@kuhrd]

@@Donnerwamp Generally when building packs you want to have a fuse between every cell and the busbar of the next parallel group. This allows a cell to fail without taking the other cells around it down with it. It also gives a last resort protection if the pack is ever short circuited and the BMS doesn't disconnect. If one cell fails and takes out it's fuse, you still have the capacity of the remaining good cells in parallel in the pack however the BMS will likely need to do a lot more balancing. Because he is using new cells, this is not as big of an issue but when repurposing cells this can be something to consider.

[@blahorgaslisk7763]

@@kuhrd Sounds reasonable. Can you point us to an example of a DIY battery pack that in your opinion was "done right"? It would be interesting to see how it works out having these fuses.

[@dougle03]

@@shammyh Why? Know any other method that less stressful for the cell?

[@rahulpathania78]

This is very well done and a beautiful unit to have! You've put in a lot of time & efforts on it. Kudos to you !

[@krzysztofm.2959]

worth to say that cells that are connected in parallel, should be matched by internal resistance, not only by voltage. Otherwise, cells with lower resistance will get more current when charging/discharging. This leads to a shorter lifetime of the cells with low resistance. I found a study somewhere that 5% of mismatch internal resistance of cells connected in parallel, leads to a 20% shorter lifetime.

[@Tore_Lund]

interesting makes sense, current is not equal in a paralel cell battery.

[@bdiddy77777]

The BMS will monitor that as well.

[@Tore_Lund]

@@bdiddy77777 With parallel connected cells, how can the BMS possible know the current going to individual cells unless you measure them individually, which you can't because they are paralleled and will share the load?? All current to the cells in parallel literally goes through the same wire, but what goes between each cell, nobody knows. Do you intent for the BMS to have a current sensor for each cell? I believe what OP is saying, that matching the cells by internal resistance is the best insurance, though they'll eventually drift with aging. Another measure is keeping cell temperatures the same, as lower temperature in one cell increases internal resistance and accelerates the mismatch.

[@pacboygamer6728]

wait i was wanting to copy his battery but if there is a flaw in the build then how do match the internal resistance. sorry if it is a dumb question I'm not to much of a technician

[@krzysztofm.2959]

@@pacboygamer6728 you either need to buy the cells that come with the measurements, or have a tool that can measure that. Regular multimeter is not enough

[@acid3x]

TSA: "Sir, your bag?" DIY Perks: "It's just a homemade twelve hundred watt, fifty volt, portable power supply, twenty four amps max, can power a microwave..." TSA: "...and I just thought you were happy to see me."

[@Daniel-qm5bq]

Held together with some nylon bolts 😃

[@resneptacle]

Good luck getting that through TSA, maximum allowed battery capacity per device is 100Wh AFAIK

[@FOH3663]

@@resneptacle Agreed TSA or anyone in the right mind, wouldn't want to be at 40,000 feet, in an aluminum tube, with this portable PS and all that condensed lithium potential.

[@UmVtCg]

Matt is British, he does not give a fuck about the TSA. And neighter do I.

[@jimmatrix7244]

@@UmVtCg 👍😊

[@SabrinaVideo]

Next episode: Building a portable Wind Turbine Generator.

[@whatsthatthere]

in brass

[@AlexandreG]

I dig

[@SebThomas69]

Nah, that's too easy. A Nuclear Reactor maybe.

[@jonathan__g]

@@SebThomas69 Out of brass

[@CaveyMoth]

"Let's see, let's see, insert Tab A into Slot B then pound it with a hammer! Got it."

[@hawkfeather6802]

This is like a fun electricity class! The only thing that battery is missing is some outlet ports

[@bradencash8399]

One goof up you got bomb

[@moritzlaszlo3115]

It's so nice to see that Theon Grayjoy finally found a new job 😜

[@alexanderbentley8813]

This guy always looks like he just remembered a funny joke and he's about to tell you

[@Extys]

That's called looking happy 😄

[@alexanderbentley8813]

@@Extys it is indeed!

[@Raiden_N7]

Imagine trying to take that to the Post Office. "Any batteries in your parcel, sir?"

[@zeroasphyxia]

"Yes" "Okay.. how many sir ?" "Yes."

[@joonasfi]

"Umm, not that I know of"

[@hatem0]

no sir just a microwave charger

[@hughjanus2465]

@@zeroasphyxia all of them

[@RossBarboss]

Looks so sophisticated and professional, not for my DIY skills! Great job!

[@dhruvjat8150]

This guy can replace big tech companies with the simple term "let's get building it".

[@ommsterlitz1805]

Bro i need this thing for camping but i'm scared to burn my house down

[@CaveyMoth]

Big tech companies just want an easy buck; Not the biggest, world-changing innovation.

@@ommsterlitz1805 better off getting a regulated power bank. Diy shit is never safe cuz u dont test all edge cases

[@ommsterlitz1805]

@ Yeah but i don't have a 1000 € for a camping tool lol I guess I'll wait to get a good one

[@PatrickRatman]

@ nothing worth doing is 100% safe. not saying that people that don't know anything about what they're doing should attempt this but relying on big corporations or government to do everything for you is precisely how we arrive at the story of "1984"

[@LeonMatthews]

Brilliant build. A nice upgrade would be to use XT-60 or XT-90 connectors instead of the Dean's connectors. We use them a lot in high-current applications for RC models.

[@thetylersherman]

If you wire this wrong, there's another secret tutorial included in this video: - How to build a portable incendiary device

[@LeLabSecret]

You deserve every single view you have on every videos you made. Everything is so clear and precise. There is no way i will ever trying to do this...but i've listen to it entierely. Bravo also for the video production that is spot on.

[@Carrotsalesman]

Next Video: "That entire previous video was shot indoors using my artificial daylight lamp 3.0, which as you can probably tell, is now completely indistinguishable from actual daylight. And, with the help of some potted plants from my local nursery, completes the illusion, fooling almost everyone"

[@avg895]

Indoors in a brass dome for the complete 360

[@twothreebravo]

"I only used those plants as a model as I built my own from brass and PTFE. Nice."

[@user-ej7yk4uw6z]

When your mom tells you to go play outside: DIY perks: YES

[@beardsntools]

He is so attractive

[@kooldudeno-lastname]

@@beardsntools ????

[@princeakilesh4881]

We reside where we play...

[@beardsntools]

@@kooldudeno-lastname ?

[@domramsey]

Next week on DIY Perks I'll be using MDF, plasticine and plutonium to create an ingenious child's chair and nuclear power station combo with a beautiful brushed aluminium finish. It truly is remarkable.

[@TinHeart]

This is completely ridiculous... It would be brass.

[@MakeDoAndMend1]

Just finished my DIY Power Bank thinghy. But it's a low power type but has features to suit my Ham Radio Portable equipment. Cheers from old George in the UK 🇬🇧

[@ambulocetusnatans]

He always makes his projects look easy, but there's no way I could ever do that.

[@OliverBurkill]

Believe in yourself.

[@kerryhaycock9446]

For safety when welding the strips I would be covering all the other rows with rubber matting or heavy cloth or some other insulator . Otherwise a slip could cause a nasty burn or eye injury. Wear safety glasses if you do this

[@mudokin]

With all the caution notices he gives, I am sure he to precautions

[@charlesballard5251]

I've looked at several power banks on Amazon in the last few months. I bought a small one that I thought would do what I needed it to do (charge/run my laptop), but then discovered that it didn't have the wattage required. I kept it, but right now it's in my car and I've only used it once to charge my phone for a few minutes when it started giving me a low battery warning, and it's there if I ever need to jump start my car. A unit as powerful as yours would cost a few hundred dollars. If you could get yours into production and at a decent cost, it could be a contender.

[@L7vanmatre]

The 84 lithium cells alone cost £311.64, or 431.44USD. (If you order them at a thousand or more at a time, you'll get them at £302.4 per set of 84.) I see this handmade project being perhaps $500-$700 depending on how much one wants to spend (the BMS he used in the video seems to be the 170€ one, but you seem to be able to get one at $50 or $30 but as he said you might be sacrificing safety/reliability and losing out on useful features). Even just going into the probably-unrealistic lower end of that guesstimate, $500 of cost per unit... The overhead would be expensive. Even just the Galaxy Note 7 could cause some pretty scary stuff at 3.85V 13.48Wh. If any unit was improperly made in production, it could be pretty big depending on what exactly fails, so I think they would need extra precautionary measures in production... Which costs in two ways: less product, more expensive machines (or more employee-salary per product if it's all done by salaried employees, of which all are handling fire machines if they make a careless-enough move). I think all these problems can be resolved in one way or another that I might not be able to think of, but it surely sounds rather expensive.

[@oliverwalters9533]

@@L7vanmatre economies of scale is how companies make things like this "cheaply"

[@royk7712]

@@oliverwalters9533 not with lithium batteries. bigger capacities = bigger power delivery circuit = cost more. not to mention that the battery doesnt get cheaper when you purchase it in bulk

[@henkheijmen]

just the cells this guy used would be around a thousand euros from where I live

[@White000Crow]

@@L7vanmatre you ditch the small cells and you use the 100-300A cells.

[@TechiesUnofficial]

This project is super entertaining to watch, and super useful. This channel doesn't deserve 3.69M subs, it deserves 10x that quantity. 💪

[@SimonVideo]

The leather handle makes it look even better!

[@zacharymcdonald6506]

The crypto market is becoming more appeal to investors seeking assets that diversify portfolios, Btc could be in the process of seeing a "volatile reset." By the moves between dips and rises it's a typical neutral outlook which makes it a tough decision for lnve stors to decide how best to utilize the current market; I'd say it's outrightly wrong to just sit back hodl and wait maybe incur some losses along the line but findn ways to always increase and stack up more coins thereby making prof!ts should be the way of life, I didn’t think it was posible to make constant win from trad!ng till I came across Daniel Wright program for lnvestors/newbies who lack understandn on how trad!ng B!tcoin works, to help them stack up more B!tcoin, since last year till date I have made over 18 worth of BTC from 3.6BTC with Daniel's help I've full confidence in his tradn abilities. You can easily get to him on ᴛᴇʟ ᴇɢʀᴀᴍ handle [ Danielwrightfx ]..

[@onday2]

I’ve watched this twice now and it’s so cool. I mean, everything you do is awesome, but the coolest part about your Chanel is watching the progression of your projects and the vast directions you’ve taken. Any chance you would be interested in engineering an e-bike? With a mind like yours, I’m sure the outcome would be spectacular

[@dkNian]

Ford: Here we release F150 Lightning. Matt: Hold my beer.

[@Steffan1970]

minimum goal: building the same of brass

[@nandosillamartinez26773]

Amazing build again, like all yours!! And the editing is just sooooo visual and nice!! Congratulations and thanks in deed for your channel and all your content!

[@m1ndles459]

this guy has one of the most relaxing voices on youtube

[@ozknight]

That title belongs to retro recipes. Great content though.

[@xplodingmojo2087]

Give this man a rock and a frozen sausage and he’ll make a wifi-router.

[@nstg8]

*rooter

[@CrazyCrusader1]

@@nstg8 router*

[@AlexandreG]

Lol, dude makes a power bank out of batteries, wires and battery management electronics and you make this comment, makes absolutely no sense 🤨

[@Hare_deLune]

@@AlexandreG 'Sense' of humor. ~_^

[@CaveyMoth]

Royter*

[@HaasGrotesk]

When his mother said "Go outside and play" He sure solved the problem! Built a battery so powerful it could run all of his gaming devices for days and then went outside to play.