DIY Powerwall - First Pack 14S 10P 18650 Li-Ion Cells - 575

[@jamesmorton7881]

I enjoy your commentary and presentation style. As constructed, the bank is very safe by design. I now feel confident in my ability to construct a large battery array for solar storage. I designed a number of application specific VME and VPX single board computers during my career as an electronics design engineer..

[@MyPlayHouse]

Hi james morton Thank You very much! glad you liked the video :-) Thank you for watching! :-)

[@coolvideoish]

Can't wait for episode 3. I didn't think that watching someone count, calculate, arrange and solder batteries could be this interesting.

[@MyPlayHouse]

Hi horrorweedvideo Thank You very much! There is a few videos between 2 and 3,, and I have not even made video 3 yet. The Storages server is next :-) Thank you for watching! :-)

[@Leebobs1983]

"I need a piece there, no here... I need a lot of pieces..." made me chuckle!

[@MyPlayHouse]

Hi Andy Lee Thank You very much! me to,, I thought that was stupid, but also fun,, so I kept it in, in editing :-) Thank you for watching! :-)

[@mwhferrari]

Hello. Thanks for the video. Could you put a link to the metal strip you used. Thanks.

[@MyPlayHouse]

Hi Mike Ferrari Thank You very much! amzn.to/2DlSIi9 or this one come closest amzn.to/2Dm0Xe9 I just did not get as much,,, glad you liked the video :-) Thank you for watching! :-)

[@Damjanhd]

if you want to solder batteries verry good and quick you need to scracth a little on battery where you will solder it and put a tiny bit of soldering paste on it.

[@MyPlayHouse]

Hi Damjanhd Thank You very much! I will give that a try at some point. Thank you for watching! :-)

[@paullundell8009]

What is your next video in line with this build and how you wire it in?

[@MyPlayHouse]

Hi Paul's Adventures The next video is there,, BMS and stuff Thank you for watching! :-)

[@LauwersFreddy]

Morten, time to doublecheck you paid for your fire insurance ;-) and yes, yes, I clicked on the bell thingy. Thank you for your videos!

[@MyPlayHouse]

Hi Freddy Lauwers Thank You very much! But I am more afraid of electrocuting myself. F*** the house :-) Thank you for watching! :-)

[@JoseGarcia-px9xj]

what type of charge controller are you going to use

[@MyPlayHouse]

Hi Jose Garcia I have an eSmart3 that I hope I can use.. Thank you for watching! :-)

[@henvan8737]

A good number of your solder connections appear to be dry joints. How are you going to perform cell balancing, you don,t appear to have any BMS. What replacement process will you use when you have a bad cell in the middle of your pac.

[@MyPlayHouse]

Hi hen van Thank You very much! There is a later video, on this,,,, that includes an BMS :-) Thank you for watching! :-)

[@chuck12-82]

I would use some automotive fuses that can protect and handle the amperage, especially those aftermarket fuses used when you upgrade an automotive alternator. The automotive ones also come with fuse blocks

[@MyPlayHouse]

Hi Chuck12 - Thank You very much! Thank you for watching! :-)

[@oldtimeengineer26]

Very good job

[@MyPlayHouse]

Hi old time engineer Thank You very much! glad you liked the video :-) Thank you for watching! :-)

[@rosemacalos2958]

Sir What is the ampere of your bms??

[@MyPlayHouse]

Hi Rose Macalos It's only 15A per battery bank. Thank you for watching! :-)

[@ohvblue]

is there any reason you did 10p? I was thinking 80p. guessing you dont need the higher amp for future use?

[@MyPlayHouse]

Hi Jer Sam Yes to be able to make a bank,, of 48v,, in a reasonable amount of time,,,, 80p would take 80*14 cells,, and take forever before I could do anything. Thank you for watching! :-)

[@Donatus11]

Question: In the above video, the battery pack has a BMS. My Question is can individual packs with similar BMS combined together to make a larger cell pack?

[@MyPlayHouse]

Hi Donatus Uwasomba YES :-) Thank you for watching! :-)

[@Sonicdude10]

Too all of you who know nothing about Lithium battery technology. This is a PSA to all of you who think this is extremely unsafe. It is fairly safe. Granted it is not safe by any sanctioning standards but the risk of fire and battery explosion lithium cells are known for is so low it might as well not be considered. Why is that? Read more for long ass comment as to why. Lithium cells by themselves are not dangerous. Charging, draining, and so on does not make them unsafe. What makes them dangerous is either puncturing the cell direct or overcharging. That balancer board seen at end of this video? that takes care of keeping the charge value balanced when these cells are used in a series circuit. You only need this controller when you have these cells in series. That is, if the + of one cell goes to the - of another cell then that is series. You need the balancer to equalize the voltage. Now let's talk about parallel circuits with lithium cells. The same setup as is used in all USB battery banks. Look inside some of the larger banks that have 2 or more cells for the system. This will be the same for all versions from cheap chinese designs to topline expensive banks. Notice how all the cells seem to be hooked together and there is no isolation between them. That is because parallel circuits need no balancing or isolation protection. The only protection needed, and it is optional, is a fuse to each cell in the parallel setup. Notice in this video how banks of 10 cells are hooked together direct. The + of all 10 cells are connected and the - is the same. creating a single lithium cell that is about 10X the capacity of original single cell. No balancer is needed as the voltage is the same between all cells. Any balancing the cells need to do will be done automatically and passively as the charge and voltages of each cell equalize out. The only time this become dangerous is if each cell is too far out of balance. Say one of the cells is full charge at 4.2 volts and another is completely dead at 0 volts. Granted that dead cell is done for but keep with me. IF you hook the 2 in parallel then the full cell will rush a LOT of current into the dead cell as they try to equalize out. That's the dangerous part of parallel circuits. That could result in cells exploding. So long story short. Stop getting worked up over these custom lithium packs made with dubious quality cells. Unless the builder is completely stupid they will not explode even in the event of a mishap. Take the pack in the video. He added little fuse links to each cell for that reason. So with that, shut up about the dangers of lithium batteries. We know. We are not stupid. We know how to work with them and not die or destroy things with hot flaming batteries. If Mr Playhouse himself sees this comments and pins it or something, thank you. I work with lithium batteries myself and have built a massive 64 cell USB battery bank that many have been giving me hell over all because of the misinformation I spoke about above. Lithium batteries are not a ticking time bomb if you know what you are doing.

[@MyPlayHouse]

Hi Sonicdude10 Thank You very much! Thank you for watching! :-)

[@zx8401ztv]

Wow that must have taken ages, you may want to get some solder flux in the future, it cleans and helps the solder take to metal nicer, just a thought :-)

[@MyPlayHouse]

Hi zx8401ztv Thank You very much! I did try flux in the first video,, it did not do much for me. Thank you for watching! :-)

[@adventurious1234]

sup Morten....hey I was wondering if maybe u could put all vidios concerning the construction of ur modules into one playlist....as I do believe I'm goin to use ur concept for block design ...ur parallel series concept bumps us up to inverter activation voltage with fewer cells needed for initial usage of the system ....nice..!!!!

[@MyPlayHouse]

Hi Sun/Wnd/PwrWall Tinkerin Yarh,, I need to make a playlist with all of this. Thank you for watching! :-)

[@jasonputtock4428]

HAve to ask. Would this also work for the UPS system battery bank backups. The reason why I ask. Is that, I want to make a bettery backup for my PC and LAPTOP that will also accept a ROUTER connection. When I lose the power around here all dies and is Fing annoying. If i could keep my router and other devices running for atleast 10 mins it would be great. Noone on Utube has made a battery backup UPS designed for a router connection along with pc and laptop connected.

[@MyPlayHouse]

Hi jason puttock You would probably be better off with something like this amzn.to/2xregdj And then in 3-4-5 years when the battery is old and tired, you could go for an Li-Ion replacement. Thank you for watching! :-)

[@beck3k]

I may have not been paying attention, but where do you get the laptop batteries from?

[@MyPlayHouse]

Hi Physical Computing Bought some, and have been collecting. for ages... Thank you for watching! :-)

[@beck3k]

Thank you!

[@kristisnjohansen2563]

Hej, virkelig gode videoer, jeg tænker på at lave opbygning på samme måde Som din, således man kan kan komme igang hurtigere, har du du en stor bms mellem de samlede moduler, eller bruger du kun den der sidder på den enkelte pakke du laver?

[@MyPlayHouse]

HI Kristisn Johansen My channel is English, and to make sure as many as possible, can also enjoy the comments, they are also English. Please keep to English. Thank you for watching! :-)

[@sebastiannobody1142]

Question: I have around 20% 2900mAh and 80% 2200mAh Samsung cells from ebike packs. How to mix to a 14s60p setup? Like 12x 2900mAh + 48x 2200mAh (in average, all cells are capacity checked of course). Or like 60x 2200mAh packs and some 45x 2900mAh?

[@MyPlayHouse]

Hi Sebastian Nobody Thank You very much! The (12x 2900mAh + 48x 2200mAh) is the way to go,, You want all the (60x Cells) to be the same capacity. If you are not ever planning to drain your bank much,, it's not that important Thank you for watching! :-)

[@althds7099]

i thought those nickel things needs to be used with tap welding

[@rasz]

they do, you lose capacity and battery life when you pump heat into batteries with soldering iron

[@MyPlayHouse]

Hi ALTHDS You can solder on them,, not sure how good or bad it is.. Thank you for watching! :-)

[@elroysteele4949]

where did you get those nickel strips really like them great videos!!

[@TheUSDesigners]

hello, i made similar battery but my bms application give me 15S and not 14S. How is it possible?

[@MyPlayHouse]

Bad BMS or ?

[@E69apeTheMatrix420]

How much for you to make one please? With this level of detail and passion input? Kind regards. Henry

[@MyPlayHouse]

Hi Henry Phillips I got a lot of cells for free,, but have spend about $400 on cells,, but way more then you see here. Thank you for watching! :-)

[@E69apeTheMatrix420]

@@MyPlayHouse I would like for you to make me one:)would you charge me £400? I love watching I don't think it's boring at all. Your funny:)

[@50PullUps]

Is something like this even safe??

[@ManofCulture]

yes it is

[@andljoy]

No , but thats what makes it fun :). Well its safe if your careful and know what your doing, like with most things.

[@MyPlayHouse]

Hi 50PullUps Well compare it to driving in a car,, it's propoly super safe,,, I did feel some tingling in my fingers, when I tutsted it with wet hands. The fuses helps,, but 48-52v and 35Amps, is not all fun. Thank you for watching! :-)

[@gregdalton3517]

Most of these guys seem to be setting their systems up in a shed in the back yard...away from the main house :)

[@ManofCulture]

*Greg Dalton* Well, *OTE* did this in his lab in his house

[@StefanoBettega]

Shouldn't that piece of nickel be put under the cell, between batteries and plastic?

[@MyPlayHouse]

Hi Stefano Bettega Thank You very much! it is under the tape. Thank you for watching! :-)

[@tron259]

Hola. ¿Que modelo de camara térmica a utilizado? Gracias.

[@MyPlayHouse]

HI Avatar My channel is English, and to make sure as many as possible, can also enjoy the comments, they are also English. Please keep to English. Thank you for watching! :-)

[@bobsagget823]

This is a lot of work

[@MyPlayHouse]

Hi bobsagget823 Testing the batteries takes forever,, the rest is not that bad! glad you liked the video :-) Thank you for watching! :-)

[@adoniscmj3212]

I would use a Battery spot welder with this big of a project. I make 18650 battery packs all the time and I have a spot welder, it is very fast and you will not risk battery damage from soldering.

[@MyPlayHouse]

Hi Adonis cmj Thank You very much! as I always say,, don't do as I do, improve on what I did. Thank you for watching! :-)

[@apprenticeofeverything]

6:00 you could do it in a better way: 1 flux the 140 cell terminals, 2 tin all cell terminals with solder 3 tin the 13 strips in every contact point 4 align the strip with cells and clamp/hold it down 5 heat the tinned points for a perfect weld. Production line reduces errors and speeds the process :D I'm just starting my own DIY powerwall, check my channel!

[@MyPlayHouse]

Hi MarioDinis Thank You very much! glad you liked the video :-) Thank you for watching! :-)

[@hartvig82]

Those fuses might go, as game of domino. If one burn, the rest of the cells have to keep up the current, and then they might go all together.

[@MyPlayHouse]

Hi hartvig82 If one cell should somehow short circuit, that fuse will blow, fine! If the hole battery pack is short circuited it is also okay to blow fuses like dominos. That is why they are there. I just ordered 20A and 13A circuit breakers today. Thank you for watching! :-)

[@bostjantrancar9605]

Fusing the cells is always good decision.. 👍 Way don't you make every pack separatly and then conect together with xt60 conectors... It is better when you do something on the battery.... 👍 If you have completly new cells it is normal to assemble battery's like you.... Nice video.... 👍 Go make 5kw 48v li ion pack it would be nice to see how would you do this.....

[@MyPlayHouse]

Hi Bostjan Trancar Thank You very much! glad you liked the video :-) Thank you for watching! :-)

[@jadu79]

I have the same thoughts and there are many different types of contacts that can work but it should be easy to get hold of or a similar one made for quite a lot of Amper and you have them with 4x5 cells, so a pack of 20p will make it a box for each cell and also put a pretty strong fuse in the middle of the pack that goes if anything happens beyond your threads? Lastly, I wonder what are the wires you use as fuses? are the inner wires from a cat5 / cat6 cable?

[@AdrianCosic]

Hi there, I'm a long time subscriber to your channel. I got a Lenovo X250 from a friend in Copenhagen, but the BIOS is locked and I can't start the machine. Kobenhavens Kommune is written on the lid, is there a way I could obtain the BIOS key so I don't have to pay some shady Romanian to unlock it. Thanks in advance. PS. It's also missing a screen, battery, ram, hard drive and charger so I don't want to buy anything of that if it doesn't work.

[@MyPlayHouse]

Hi Adrian Čosić Thank You very much! I do not have any ninja trix for that. :-/ Thank you for watching! :-)

[@AdrianCosic]

My PlayHouse hahah me either, I hear that someone managed to get the unlock key from the tech support whre this notebook formaly belonged to. I hear it was a school.

[@AdrianCosic]

Well I fixed it without the password, removed the CMOS battery to remove open lid tamper protection and installed the OS via PXE :)

[@MikesDIYTeslaPowerwall]

Good start to the powerwall, one day you might get to 10kwh :0

[@MyPlayHouse]

Hi Mikes DIY Tesla Powerwall Thank You very much! I just got 24kwh of old lead acid batteries that I also want to use. Thank you for watching! :-)

[@bostjantrancar9605]

Is non wroten procedure how to conect battery's between each other... First you have to measure voltage of the batterys that you going to conect it should have the same voltage....

[@cosminraduta8267]

it's only a problem when you have unbalanced cells in series(the bms will take care of that before the battery is in use); in parallel they are usually harmless

[@MyPlayHouse]

Hi Cosmin Raduta Thank You very much! I have been messing with this for 1½ years now,, just need to build a power pack before the batteries die of old ages... :-) Thank you for watching! :-)

[@BratislavMetulskie]

the creepiest basement i've ever seen :o

[@MyPlayHouse]

Hi SteelVsMetal Thank You very much! It's not that bad! :-) Thank you for watching! :-)

[@DIYTechRepairs]

Another diy powerwaller :)

[@MyPlayHouse]

Hi DIY Tech & Repairs Yes just another one,, seems to be the way we are going now,, make your own power! Thank you for watching! :-)

[@ManofCulture]

1 pack down, 99 pack to go

[@MyPlayHouse]

Hi ANTHONY CABALLERO Thank You very much! send more cells :-) Thank you for watching! :-)

[@Cooper3312000]

It looks cool but have had experience with batteries exploding and starting fires.

[@MyPlayHouse]

Hi Jonathan Williams Thank You very much! Nice,, how did you do this? Thank you for watching! :-)

[@PottsTheDruid]

Why not use off the shelf fuses? If you think safety is expensive try having an accident!

[@MyPlayHouse]

Hi Ramadan Fishler Thank You very much! If you plan to do something like this, feel free to improve on what I have done. Thank you for watching! :-)

[@PottsTheDruid]

I love that you reply to comments so well, you're such a good youtuber!

[@MyPlayHouse]

Hi Ramadan Fishler Thank You! As you can see, I get a lot of sugestions. I do read them, but I can't do all of them. I did look at fuses,, they cost a small fortune here,, and cheap ones from China takes long to get here. Thank you for watching! :-)

[@ybpvin]

Що буде, якщо один акумулятор закоротить ?

[@MyPlayHouse]

HI Flay My channel is English, and to make sure as many as possible, can also enjoy the comments, they are also English. Please keep to English. Thank you for watching! :-)

[@thediydude4110]

That would make a nice ebike battery, 52v.

[@MyPlayHouse]

Hi Rippin Engines Thank You very much! glad you liked the video :-) Thank you for watching! :-)

[@thediydude4110]

@@MyPlayHouse Thanks man. I need lots of laptop batterys lol.

[@MyPlayHouse]

Hi Rippin Engines Yes,, be sure to tell every one that you are looking for them... Thank you for watching! :-)

[@1akmason]

Using flux would help

[@MyPlayHouse]

Hi 1 Lesbian Stoner Thank You very much! I did try that,, did not help much,, not enough to be worth the time applying it. Thank you for watching! :-)

[@bostjantrancar9605]

When cells heat up is not good sign.....

[@MyPlayHouse]

Hi Bostjan Trancar Thank You very much! Also why I kept an eye on it,, :-) a thermal eye. Thank you for watching! :-)

[@MikesDIYTeslaPowerwall]

Not 1000w, Not sure your maths is right, your avg cells are 1600mah so 1.6ah. Which is 1.6x10p = 16ah at 51.8v which is nom 3.7 per cell x 14. 51.8volts nom, 58.8volts fully charged. So 16ah x 51.8 = 828w. Even if you did your maths at 58.8volts or 4.2 per cell its only 940Wh. But Always calculate it at the cell nom voltage and for 18650 its 3.7volts. It would be 1000w if you used 2000mah cells. :)

[@MyPlayHouse]

Hi Mikes DIY Tesla Powerwall Thank You very much! It might be a small kilowatt hour of power. Thank you for watching! :-)

[@craigd458]

Mikes DIY Tesla Powerwall video are the best Powerwall videos on the internet, you make the best server videos on the internet, you both rule!

[@touati84]

This is turning in to creepy project this batteries has a lot of charge in them be careful and have a nice day

[@MyPlayHouse]

Hi Khaled.info Thank You very much! I am aware of that,,, a lot of power :-/ both good and bad. Thank you for watching! :-)

[@romanrm1]

Still it doesn't seem a good longterm idea, that you can't replace a single cell without disassembling (unsoldering) almost the whole thing entirely!

[@MyPlayHouse]

Hi roman rm It is possible,, but NO it is not fantastic. Thank you for watching! :-)

[@TKomoski]

Morton never bet on a three legged horse, you're sure to lose.

[@MyPlayHouse]

Hi T Komoski No sure what you are referring to ?? Thank you for watching! :-)

[@macuser1k]

Those need to be balanced or else you're gonna have a fire on your hands. Also, soldering the cells is NOT a good idea!

[@MyPlayHouse]

Hi macuser1k Thank You very much! Thank you for watching! :-)

[@macuser1k]

You're welcome and stay safe! I really enjoy your videos so i'd really hate to see you all crispy.

[@squidlings]

This dude is a fire waiting to happen, watch his previous video how to groups cells together in parallel. Scary shit... Puts 10 cells of random capacity together as one.

[@ciaranbrennan16]

Don't use heat!, and solder

[@MyPlayHouse]

I did try spot welding, but welded through the batteryes,, not great :-/

[@gtag174]

i would recommend using a spot welder kzbin.info/www/bejne/mpjXmmSQia2pjas use the pcb to replace the sunnko PCBs

[@MyPlayHouse]

Hi George Thomas Thank You very much! glad you liked the video :-) Thank you for watching! :-)

[@BxCornw]

Apiece of wood would be safer than a screwdriver

[@MyPlayHouse]

Yes,, but it has not been a problem.

[@tothjozsef1971]

I think that you cannot trust in a plain wire which is used as a fuse. Instead of it, you can use leaded fuses, which would never cause fire on excess currents. There is a continous operating condition close to the fault current value where the wire works as an efficient heater without melting. The soldering of the battery cells is not a good idea, because a short circuited battery can cause as much heat as it enough to get the solder melted or even cause fire. Also the melted (and exploding?) solder have critical risk inside an equipment as it cannot predictable whether where it can lead to additional shortcircuits or burns. In my opinion this is the main reason why almost all of serious battery pack manufacturers are using welding techniques in their production. The design has some additional minor flaws which can cause some other more serious issues. These are coming from the nature of Li-ion batteries and also the missing safety circuits (parallel supervisory is not enough in all cases at kAh ranges).

[@MyPlayHouse]

Hi Tóth József Thank You very much! I do believe that the chance of dieing in a car crash is properly still a 1000 times higher. Thank you for watching! :-)

[@Ironside451]

Please don't burn you're house down

[@MyPlayHouse]

Hi Ironside451 Thank You very much! I am not planning to! (And if was, I would not tell you :-) Thank you for watching! :-)

[@uilsonRJ]

Not first!!! xD

[@MyPlayHouse]

You might not have been first,, but you are not as late as me.. :-)