built 11 of these so far, 4 to go, 10 have been running for 10 months without problem :)
@fisherus4 жыл бұрын
Amazing how your subscribership has grown this past year. Love to watch your and David Poz's fun and interesting videos like this one as I continue my journey of becoming more affluent in battery capacity and composition. I owe it all to you two and Will Prosser. Thanks again!
@tedz744 жыл бұрын
I built a very similar set up. However I assembled 2 groups of cells as 7s12p, each with a 20A bms. My reasoning was that if there was an issue, I'd only have to tear down half of the total battery, and the (2) 20A bms's cost less than a 40A. I'd discharge the pack and see if you have a weak string limiting your overall capacity.
@georgepene60973 жыл бұрын
Hello, its something that i did not understand. How do you choose the bms for your pack?
@georgepene60973 жыл бұрын
Did you use a 20A bms for 7s12p or just 7s6p?
@sseventyturbovolvo85624 жыл бұрын
To add a lot more safety here, you add a main fuse into the pack, and additionally for each balance lead a small fuse. If in any case the BMS fails, no fire will start. This is a serious flaw! Do not underestimate the amount of current if a short is taking place. -- Otherwise, its a nice built :-)
@robpaultog3 ай бұрын
What fuse would you recommend for the balance leads?, most balance at no more than an amp am I right? Thx
@sseventyturbovolvo85622 ай бұрын
@@robpaultog a 5 amp quick fuse is more than enough, glass or ceramic 5mm diameter...works up to 50V without problems...if you can, use the ones with sandfilling...
@robpaultog2 ай бұрын
@@sseventyturbovolvo8562 thx m8 👍🏻
@DavidPozEnergy4 жыл бұрын
I love that ABS board you used
@LithiumSolar4 жыл бұрын
Thanks!
@theprepperfrog1674 жыл бұрын
I'm using pieces of those old ''crazy carpet'' i bought for nothing.
@zainudindin38762 жыл бұрын
@@LithiumSolar ³³³³²
@traviswilson54102 жыл бұрын
@@LithiumSolar can I hire you to build me 2 battery boxes...just like these...except 12 volt
@anonymous175 Жыл бұрын
^^^ That makes two of us
@michaelkeller50083 жыл бұрын
I came here looking for ways to build my own battery; and i have to say: Sir, your video and build is the most safety-aware approach I found on YT so far. Thank god there are still people who remember to isolate the poles to avoid a short circuit!
@AD6DMDennis4 жыл бұрын
This is great! I like the way you worked the XT60 connector to the battery and BMS instead of directly soldering the the BMS ports to the battery. It provides convenient way to disconnect the BMS if needed.
@askostadinov4 жыл бұрын
Glue the BMS with silicone to the cover of the ammo case. This will improve heat transfer to ambient. Put another sheet of foam on top of the pack. Good luck and keep the good work.
@MrSGL212 жыл бұрын
great build. i think i'm going to build this same pack but as 13s14p rather than 7s 26p. i'm going to use it to extend the range of my 48v ebike. i have 150 samsung 26hs on the way
@Nitecrow3142 жыл бұрын
7S is only 24v(nominal).
@gregb17144 жыл бұрын
If the BMS is getting hot, I would have attached it to the metal lid (heatsink) and put a layer of plastic over the top part of the battery pack to isolate/insulate it from the lid/BMS.
@fubarlife77763 жыл бұрын
Agreed. But I don't think he cares. Also that battery pack is going to have problems in temperatures over 100° with my personal experience.
@jamesprocter1024 жыл бұрын
Clean compact easy carry and a wonderful well informed build. Great job much thanks.
@capecoaster692 жыл бұрын
Good job for the education and illustration of the build - pushing the bounds of the DIY for common use
@PFab4 жыл бұрын
I'm just curious to see how this would compare to a used lithium battery pack from a reputable manufacturer. Cost vs efficiency.
@jacquesdubord68449 ай бұрын
It seems so simple the way you do it
@stefi3009724 жыл бұрын
the Heat Shrink link takes me to battery hook up but to the menu of sizes but no mention as to what size you used in this project
@LithiumSolar4 жыл бұрын
Sorry. I used the 340mm heat shrink.
@Megames20124 жыл бұрын
It appears to be a 50 caliber ammo can; the 30 caliber ammo can is significantly narrower.
@LithiumSolar4 жыл бұрын
Good to know, thanks! The site just said "medium' LOL
@PFab4 жыл бұрын
Yeah I agree. 50 cal box. They make many sizes. But this is the 50 cal. Used boxes are great as long as the seal is still soft.
@Megames20124 жыл бұрын
@@PFab And if you're worried about the seal, brand new, they're only 15 bucks.
@Megames20124 жыл бұрын
@@LithiumSolar Maybe do a larger version using the 30mm, 40mm, 60mm, 81mm, or 120mm mortar cans? www.sportsmansguide.com/product/index/us-military-surplus-m592-30mm-ammo-can-used?a=868496 www.sportsmansguide.com/product/index/us-military-surplus-pa120-40mm-ammo-can-used?a=1586611 www.sportsmansguide.com/product/index/us-military-surplus-pa70-60mm-ammo-can-used?a=2073641 www.sportsmansguide.com/product/index/us-military-surplus-pa156-81mm-mortar-ammo-can-used?a=1952438 www.sportsmansguide.com/product/index/us-military-surplus-pa154-120mm-mortar-ammo-can-used?a=1935509
@daudamuhammed9578 ай бұрын
The construction is fantastic
@gerardjachymiak58224 жыл бұрын
Thank you for making this video, I'm halfway building a battery but I'm going to start again and use an ammo can as I need slight rain resistant, unless is there something better you could recommend
@LithiumSolar4 жыл бұрын
With the gasket in, the can is fairly rain resistant. I wouldn't call it water proof though obviously. If you leave the gasket in, make sure you have a hole drilled somewhere for ventilation (on the bottom is fine so water doesn't get in). You don't want it pressurizing if something goes wrong.
@eyeswideshut28003 жыл бұрын
Got the same heat gun, guess I'll try the fused strips I got. I've still got annoying battery harvesting to do..thanks BH
@edbjr84 жыл бұрын
Really awesome video. Could you make a future video on how to integrate a capacity monitoring meter and a voltage buck or boost converter to use with these packs?
@richpalmisano17404 жыл бұрын
He has a diy solar generator video...check it
@richjackson8604 жыл бұрын
I would REALLY like to see an appropriately sized breaker or fuse somewhere between BMS and the connector. I understand that the BMS provides SOME protection, but with the potential excitement factor of the 18650's dumping a huge amount of power in a short period of time should the BMS fail, I'd lean heavily on the side of caution.
@pip54612 жыл бұрын
It would be nice to know what the price difference is between the kit and the complete unit.
@5400bowen2 жыл бұрын
I'd say if there was any doubt those nickel strips were adequate to carry the 20 amps, it would be simple the lay another layer of the strip on top of the first one and spot welled it down to the first one. Remember, two wires can carry double what one can when wired together at each end.
@offgridwanabe4 жыл бұрын
Good stuff the capacity is likely low due to the bms single cell cut off but who knows I would be happy with that much juice.
@LithiumSolar4 жыл бұрын
It's possible. That's one thing I don't like about these smaller BMS. The Batrium has me so spoiled with being able to see stats all the time 24/7 lol.
@offgridwanabe4 жыл бұрын
@@LithiumSolar Next time maybe you could show us the voltage and use a cell checker on the 7s connector after shutoff to see the single cell voltage. Thanks for all your sharing and good information i always learn something each video
@TRICHOMETRIST4 жыл бұрын
The braided wire can be tinned before attachment , for minimal heat transfer when attaching , couldn't see if you tinned it before!! Nice build , neat job!! Maybe a better BMS? 😎🤙
@marcoandreknottjung34184 жыл бұрын
What is the price of one, for a community building project, what we can place, with such batteries for the energysolution also for campers and tiny houses?
@Overclockedegg4 жыл бұрын
Looking at all of the components with the biggest ticket items being the battery cells $100-200) and inverter (~$200) I would say this is $500-600 total. Plus you will need a spot welder and a heat gun if you don't already have.
@MmeHyraelle4 жыл бұрын
Im certain you figured it out but for the final heat shrink wrap, a slit that does not go to the edge may produce better results. In any case thanks for the content im learning a lot.
@infected7258 Жыл бұрын
Great work, I had a question, I’m not that good on lithium batteries and such but would you be willing to sell a better hock like this one
@LithiumSolar Жыл бұрын
No, I don't sell batteries. I would suggest buying a LiFePO4 battery vs trying to build one. This was just something I did as a hobby for fun. LiFePO4 is a much better choice for most applications if interested in lithium batteries.
@briangroene77564 жыл бұрын
Great build. Could you do an 8 x 6 battery also?
@adamtedder10122 жыл бұрын
I need this. Badly. I have a crap ton of 18650 but dont know how to make a battery. Lol
@catgynt91482 жыл бұрын
Quite an interesting battery build here. That appears to be a 50 caliber (1/2 inch or ~13mm) ammunition can, each bullet would be about as big around as one of your batteries. Considering that you calculated 7 cells in a series, wouldn’t it have been better to orient the 7 batteries as 2 groups of (+ - + - + - + ) with 2 cell wide nickel strips 12 34 56 on one side and 23 45 67 on the other instead of 1 group with the center fold (+ + - - + + - fold - + + - - + +)? Granted that you would have to commit some “skull sweat” into wiring the two blocks together but if you used 2 20A BMS units, each block of 91 batteries could provide 20A independent of the other, be shrink wrapped individually and in case of needing a repair, an individual block could be removed without shutting the entire system down. Redundant circuits for security. Did you test the batteries before adding them into your arrays? Because of the heat buildup you ought to mount the BMS module to the inside of the lid using the thermal gel that PC CPUs use to connect to their cooling device. Thanks for sharing this insightful video. Wishing you a great week. Cheers
@Tom-jd1rm11 ай бұрын
Noticed this build was 3 years ago. I wonder what the updates are on this one? Still working? Battery life?
@LithiumSolar11 ай бұрын
I never actually used it and moved to LFP instead.
@1ssac14 жыл бұрын
Perfect build, but there's always a "BUT" - glue BMS onto the battery heatshink with some duble sided tape.
@miscbits63992 жыл бұрын
If you want to know how much starpping to use, run the current you want through one strip and see what the voltage drop is (better still, use a milliohm meter to directly read the resistance) - the current test will also tell you how much heating there is at rated current. I would run a second test at twice or more the current to test for gross heating effects (a fuse is rated to blow instantly at double current but will take 6 hours at 150% - you don't want your strip to burn out before the fuse!)
@fenderstratguy4 жыл бұрын
You do really beautiful work. At 23:17 I think I would have put at least a few dots of hot glue to hold that BMS in place, and a piece of yoga mat foam on top the BMS, but that's me. I always like my electrical connections to be under no mechanical loading.
@fisherus4 жыл бұрын
Nice clean build. I imagine that you could string and parallel them into a temporary battery bank, if necessary?
@V4suki2 жыл бұрын
Why are you useing xt90 if you made pack to output 40A? xt60 would be good enough.
@LithiumSolar2 жыл бұрын
There seems to be some controversy as to whether or not the XT60 is actually designed to run at 60A continuous. It seems skimpy to me so I decided to be safe and use the larger XT90.
@David-pk9be2 жыл бұрын
Nice vid and great craftmenship
@Feloblod114 жыл бұрын
I've been subbed ever since your Solar Gen episode. I know a lot of people have dropped off since then. But just some user feed back, these are the type of episodes i enjoy. Do what you want with your own channel. But I LOVED this episode. Cheers!
@IRONMANMETALBILLDANKANIS2 жыл бұрын
Awesome video. Next time you move the batteries to place on top of the other ones put the ABS on the top pack and hold it firmly to lower it.
@1inAJ4 жыл бұрын
Two things come to mind here. The first would be to use the can lid as a heat sink. Second would be to have the lid opened up a bit to help keep things cool. The ambient temperature in the video is lower than most real use scenarios. Especially if you are in the desert southwest 😁
@piconano4 жыл бұрын
I'll take 2 of these for a 48V SLA replacement. Please send ASAP. Thanks. 🤪
@geecee72162 жыл бұрын
What can run that system and for how long
@jadu794 жыл бұрын
the things i thought of when i saw your video were why you did not solder both the plus and negative cable and also the balance wires and then weld so you do not risk heating unnecessarily and then not having to worry about damage and I think myself would solder the balance cables to a long nickel strip and then cut it down so you can put 4 welds on it. Then I do not know what those plastics cost that you insulate with but compare the price with IKEA thin cutting board "Finfördela" because it may be worth comparing with but it can not withstand high temperatures
@НикаСаградян4 жыл бұрын
I'm glad that you don't "hunt" for views, and are more focused on your own projects. Loved the box, easy to carry and looks neat
@Nastymedicine Жыл бұрын
Did it ever blow up because of overheating?
@LithiumSolar Жыл бұрын
No...............
@kennoman55932 жыл бұрын
I think I would have doubled up on the layers of those strips going down the sides
@brookerobertson29514 жыл бұрын
I think you got less capacity than expected because the batteries hadn't been balanced.. I think after you do a few cycles and the BMS give them a top balance you may get an extra few percent. Also I'm not sure about this but I don't know if the BMS has as a metal heatsink plate the bottom. ? If so then some conductive glue and stick it to the lid of the ammo can as an extra heat sink. Anyway I like the way you made it. Nice compact and clean. I think it'd be good take camping. If it had a a type c charging module. So you can charge a phone and even a laptop off grid and for about a week.. good job.. 👍
@hectorvillarreal5194 жыл бұрын
What electronics do you use for measuring amps hour to battery; very nice diy battery.
@Boemel3 жыл бұрын
i want 2 in series for 48v trike. the size is perfect. just plonk them under the seat plug in and done.
@zaprodk3 жыл бұрын
What's the dimensions of the ammo case you are using here? (link is dead)
@justinlacapria28984 жыл бұрын
Nice clean build, well done.
@girlmastergeneral4 жыл бұрын
what mppt controller/inverter is that?
@LithiumSolar4 жыл бұрын
PIP 2424LV-MSD > ebay.to/3hbo2Vd
@ExilesGate Жыл бұрын
@@LithiumSolar Would a 20amp mppt be ok with a 485w panel?
@loucinci39224 жыл бұрын
Nice project. Total cost? Total time?
@LithiumSolar4 жыл бұрын
It's very difficult to judge time spent. Videoing things makes them take 10x longer than they should. It took me a little over a week to put this together because of having to work and family things.
@jimmyandropoli86352 жыл бұрын
Im into making packs but that is way above my skill level at this point. What would you charge to make me one?
@LithiumSolar2 жыл бұрын
Sorry, but I don't sell batteries (or build them for others).
@SteveGuzer4 жыл бұрын
If you were pulling 12v from this battery bank (through a step down converter) would the amp hour rating then double? 144AH at 12V?
@Teknopottu4 жыл бұрын
I would think almost. Some losses on conversion.
@jamesevans9383 жыл бұрын
looks like you got a current spec 50 Cal can but if anyone you is serving or has served want to let me know if I'm correct since i can make out one the marking says M2A2
@MrMuzza0084 жыл бұрын
Is that a tablet running Win10 or something else? And is that the batrium software displaying the readouts?
@LithiumSolar4 жыл бұрын
It's an Android tablet. This is not the Batrium software. I wrote some custom code that pulls data from the Batrium, stores on a MySQL database, then renders in any web browser using Grafana.
@johnq87923 жыл бұрын
very nice install,
@itisno14 жыл бұрын
i'd like to see a build with the 8 & 6 wide cell holders
@jerryjordan6773 жыл бұрын
@Lithiumsolijer How much is This Battery ? Thanks
@joaoncr3 жыл бұрын
I don't know how many amps you are planning to draw from it, but those four nickel strips can not safely handle more than 5 amps each, totalling 20amps.
@JJ21lives4ever4 жыл бұрын
I live your projects and have been using batteryhookup thanks to your recommendations, with great results. I was wondering, with the cell level fusing, a single cell failure to dead short should "blow" the fuse for the cell and the only negative result should be a drop in capacity for each series cell pack correct?
@brianvandy40023 жыл бұрын
Maybe attach the BMS to the lid of the can. Then the can will act as a heat sink.
@aaronpeterson16773 жыл бұрын
I can't say enough about how well this video was put together! Awesome Job!
@fgbhrl49074 жыл бұрын
You might have just got unlucky with a bad string of cells in terms of capacities. I would try discharging the pack, and seeing which string has the lowest voltage -- you might find replacing a couple of cells will get you back the capacity.
@dodgeme1986truck3 жыл бұрын
that is an ammo can for an m2 version a3... AKA ma deuce .50cal machine gun
@ima6leaker3 жыл бұрын
Very cool design
@xitee62584 жыл бұрын
Is there a similar site than battery hookup for germany? I wanted to buy batteries from battery hookup, but then there was this shipping cost calculation... it costs $80 to ship it here to germany! 😥
@electrojessy42704 жыл бұрын
I use www.nkon.nl cheap and new cells
@xitee62584 жыл бұрын
@@electrojessy4270 thanks. The Batteries costs more there but the shipping is a lot cheaper. I still save money 😀
@krakenking15974 жыл бұрын
A very enjoyable video as always.
@padreantonioraygozav.raygo9576 Жыл бұрын
Will you be able to make me two battery🔋 Packs with Li-ion BL26650 3.7v &6800mAH, as many🔋are needed x 100Amp I'll buy'em for my Power Inverter 24v systm. Thank you 🙏🏼
@padreantonioraygozav.raygo9576 Жыл бұрын
I'm not sure if this Orange 🔋3.7v/6800mAH are it's real Capacity. But it will saveme Storage Space
@fnordingers4 жыл бұрын
For fourty amps the main bus bar just needs 10mm^2 max
@sam_wyt98794 жыл бұрын
Neat and simple back up power box 👍
@Bubbz20243 жыл бұрын
Beautifully executed compact beast of a battery pack. Aside from charging it through a solar array, what amperage DC to DC would you recommend using to charge it ? Amazon has plenty of 29.4v 1-2 amp chargers but that would essentially be a super slow trickle charger for this battery.
@ErCanEverything3 жыл бұрын
Nice work👍👍👍🙂🙂🙂🤝🤝🤝
@michaelcarman52162 жыл бұрын
i'm a 78 yrold new to it. price?
@juliauwanto4 жыл бұрын
I wonder why u are not using ur flir one
@LithiumSolar4 жыл бұрын
I really need to pick up a second used phone that I can dedicate to the Flir One...
@jimbob172 Жыл бұрын
Impressive video. You explained several small details that were left out on other similar videos done by the juggernauts on youtube
@ExilesGate Жыл бұрын
It might be worth routing the BMS outside the enclosure....place it on plastic or ceramic standoffs and slap a massive heatsink to it. I've purchased most of the items you have here from battery hookup:) I'm just testing the modem batteries to get their capacity & internal resistance. I used your promo code BATTERY & got a sweet 10% discount so thanks man. I was wondering what Atrium Shunt your using? Im new to this...does it just monitor the battery? Is that how your getting the data on your ipad? *Would love to see a video on how to connect up the BMS wires? I saw one guy wired it up wrong & it completely drained his battery. (I have a 20amp mppt & a 485w Canadian Solar Panel & a 24v inverter.) Thanks ..love your videos man.
@thomasnyanfore84244 жыл бұрын
New subscriber here. Did you do a video using the lifepo4? I want to do a 24v 50A-100A battery. Will those cell holders work?
@gamingexpress25494 жыл бұрын
Your videos are awesome
@gamingforlive21504 жыл бұрын
i would love to own one altrought i can`t affor the materials like a spotwelder and dont trust soldering in this case :(
@anthonypelchat4 жыл бұрын
There are several non-spot weld options at there. Jag35.com had the simplest that I've seen. Vruzend.com has another option that isn't as simple, but easier than spot welding and cheaper than Jag.
@huckfin11003 жыл бұрын
Perfect for a trolling motor on a kayak
@markbrock90204 жыл бұрын
Love the build. Great job on the video too! I am curious what MPPT controller you used (specs). And could you build two of those batteries and hook to the controller in parallel? Seems like a good small home backup solution. And easy to grab one and take camping. :)
@flojotube4 жыл бұрын
@Lithium Solar - In case you wanna add it to your details, that ammo can is the standard .50 CAL ammo can. Another great vid. 👍 Can you please share your opinion on the best “budget” spot welder you’re aware of? Your unit is so efficient AND QUIET, but the price tag of $214 from China, or $250 domestic is beyond the realm of practicality for my current level of experience. Any advice is greatly appreciated.
@mishpatim1234 ай бұрын
20:35 That's The Dude speaking
@GoatZilla4 жыл бұрын
Panel mount connectors.
@LithiumSolar4 жыл бұрын
I considered panel mount but the panel mount XT connectors I could find were male versions. Good for power input but not output as both pins are exposed "hot" and any accidental metal object contact would short it out. I think an Anderson 50A would have been a better choice, but I didn't have any on hand at the time.
@GoatZilla4 жыл бұрын
@@LithiumSolar Yeah finding panel mount connectors has kind of been the bane of my existence. The other problem is the shape/orientation. You have more vertical dead space (which you fit the BMS into) than lateral dead space. I don't know how hot those BMSs get, but I would have laid it on the bottom in kind of a sub floor, and also put the XT90 flat along the bottom as well, cut a hole for it, and then pseudo-fixed it in place.
@theprepperfrog1674 жыл бұрын
Thank you, sir.
@Luckie3373 жыл бұрын
All that work and hundreds of connections!! Just go buy a 280ah prismatic battery and your far better off ! Less than $100
@LithiumSolar3 жыл бұрын
Yep, not a bad idea!
@ExilesGate Жыл бұрын
@@LithiumSolar You would need 7 of them at $190 each. Thats allot of money.
@LithiumSolar Жыл бұрын
@@ExilesGate 2 years later, fully agree with the above comment. I would not do this again for a variety of reasons and just grab the LiFePO4 batteires.
@JK360noscope2 жыл бұрын
Well damn, I didn't know I was gonna get to see the MVP today but there he is! Subb'd
@rklauco4 жыл бұрын
Nice build - I would opt for 6 cells and more room for heat (putting something heat-isolating between the BMS and battery). Otherwise very nice job!
@stevedutcher38754 жыл бұрын
Nice idea!
@tassja1411723 жыл бұрын
great work!!
@IRONMANMETALBILLDANKANIS2 жыл бұрын
You should do personal consultations. Charge $60- $90 an hour over the phone.
@AndyMcBlane4 жыл бұрын
Great video!
@AndyMcBlane3 жыл бұрын
Forgot I watched it, watched it again and was going to say great video!
@balloney2175 Жыл бұрын
l am confused about your connection of batteries... this not a DIY for a non electric engineer like me
@LithiumSolar Жыл бұрын
I'm certainly not suggesting you (or anyone) build one. I just thought I'd film the process of building mine. There are plenty of pre-built batteries on the market that are much safer than trying to build your own.
@balloney2175 Жыл бұрын
@@LithiumSolar But they joy of building one yourself that works is priceless!
@glytch52 жыл бұрын
what the heck are you going to use that pack for? A car?
@LithiumSolar2 жыл бұрын
No idea. It was fun to build and has since been disassembled.
@carholic-sz3qv4 жыл бұрын
The build is clean asf 👌 i would to do the same type of project
@aaronzabala12902 жыл бұрын
Sir, Good Day! it's my pleasure! if you make a diagram connection of your BMS, connected in 24 v setup. your creation is amazing. just now, I copied your creation. thank you
@clydesdalem.8943 Жыл бұрын
I had bad luck with them Battery hookup. Never helped me out with some bad products they sold typically the too good to be true deals ARE HORRIBLE. DONT DO IT