Very Detailed Beginners Guide To Building A Custom DIY LiFePO4 Battery

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Buy the Daly BMS 200A 4s 12v used in this video: geni.us/Daly200A
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- THE PRODUCTS USED IN THIS VIDEO -
Daly Smart BMS: geni.us/Daly200A
EVE 280AH LiFePO4 Battery Cells: geni.us/EVE280AH
M6 Thread Bar: geni.us/30cmThreadBar
M6 Connector Nuts: geni.us/M6ConnectorNuts
Clear Tube For Thread Bars: geni.us/ClearTube
Heat Shrink Lugs (for balance leads): geni.us/InsulatedLugs
35mm2 x 6 Copper Lug: geni.us/CopperLug
Adhesive Heat Shrink: geni.us/FavHeatShrink
Hydraulic Crimping Tool: geni.us/HydraulicCrimper
Ratchet Crimping Tool & Cable Stripper: geni.us/RatchetCrimper
Drill Bits: geni.us/DrillBits
Torque Wrench: geni.us/GiantTorque
Heat Gun: geni.us/hduirF
Multimeter: geni.us/KaiweetsMultiMetre
3.65v Charger: geni.us/Wate365vCharger
14.6v Charger: geni.us/ChineseAC
Variable Power Supply: geni.us/iAk3
Dewalt Drill: geni.us/DewaltDrill
Dewalt Jigsaw: geni.us/DewaltJigsaw
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- CONTENTS OF THIS VIDEO -
00:00:00 - Intro
00:03:00 - Components
00:10:48 - Tools
00:17:33 - Clamp Construction
00:33:35 - Top Balancing
00:50:51 - Prepping BMS
00:55:05 - Crimping Main Positive Wire
00:58:51 - Installing The BMS
01:12:05 - Setting Up The BMS App
01:14:18 - Final Thoughts
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Welcome to our channel! We’re excited to get into this with you guys, share some of our journey and knowledge of custom van conversions & Offgrid Power.
This is a very detailed step by step guide for building a custom DIY LiFePO4 battery. This video is intended to help beginners that have no experience in building these batteries. If you've never done anything like this, but want to build your own LiFePO4 battery, then this video is for you!
If you’re building out a van and need help, get in touch: geni.us/offgrid-contact
If you're not sure where to start with your Offgrid Power set up, book a consult call with us: geni.us/offgrid-consult
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#offgridpower #vanlife #solarpower

Пікірлер: 246

@philpowell6915 Жыл бұрын

Astonishingly good video. I've ordered my cells and BMS, and cannot wait to build my own battery. Thank you so much for providing this content. It's incredibly useful 👌

@remnl 9 ай бұрын

just wanted to thank you guys for this video. due to your videos i build my own battery for my camper conversion and i used this box design. i only used the JK smart bms instead. greetings from the netherlands

@nathoilboy2053 2 жыл бұрын

One of the best demo's I have seen! 10/10 and cant thank you enough. Production, editing, lighting, sound and presentation is well beyond perfect! Love your workshop and attention to all the details. Time to bulid mine!

@offgrid_power 2 жыл бұрын

Thanks for the feedback, Nathan! Glad the video was helpful for you!! ☺️☺️

@mihaipitu9172 Жыл бұрын

You always cover the small details that make the big difference, appreciate 👍

@offgrid_power Жыл бұрын

Glad you enjoyed it!

@ternyu 9 ай бұрын

I also want to assemble my own battery recently. Thank you for this video, which explains it in detail.

@bengunning3420 Жыл бұрын

Love these guys, a pleasure to deal with and extremely helpful answering all my noob off grid queries. Highly recommend! 👌👍🤓

@offgrid_power Жыл бұрын

Thanks Ben! Good to see you yesterday! :)

@TheDonaldCoyote 3 ай бұрын

Who knew Peter Gabriel was so good with batteries?

@grumpysod9029 Жыл бұрын

Most comprehensive and well presented video. Many many thanks.

@offgrid_power Жыл бұрын

Glad it was helpful!

@RogerBall1975 2 жыл бұрын

Cheers Roger, another great video! You've really helped me understand how to put my own battery packs together

@offgrid_power 2 жыл бұрын

Glad it was helpful! :)

@KevinGenus 10 ай бұрын

This was detailed, very detailed, very, very detailed. Thank you.

@rosalyn1944 Жыл бұрын

Good job we had this vid, we made sure the bms icon was right next to the KZfaq one, we went dizzy switching between the two but couldn't have done it without it

@howitzerm777 4 ай бұрын

Thank you so much for sharing your experience with us ♥

@erroneouscode Жыл бұрын

Thank you for the very thorough explanation.

@offgrid_power Жыл бұрын

Glad it was helpful!

@hfig79 Жыл бұрын

Great video, this is just what I was looking for, thank you very much for taking the time to put it all together. Are there any considerations I would need to make if I wanted to connect two of these battery packs in parallel to double my Amperage capabilities?

@prohand79 2 жыл бұрын

Thanks for shearing your knowledge. Much appreciated! Cheers Mick

@offgrid_power 2 жыл бұрын

Hope it was helpful!

@PhilipMcintosh Жыл бұрын

hi after watching this I had to have a go top man. well I did it which could show you love all your videos and the info you supply keep them going.

@offgrid_power Жыл бұрын

Hey Philip, I saw your post on Facebook. That’s a good looking battery! Glad you enjoy the videos!

@davidmcintee6812 9 ай бұрын

Very well done, and very helpful.

@dougg8280 2 жыл бұрын

Thank you for this video. Looks like a great project.

@offgrid_power 2 жыл бұрын

Hope it’s helpful! 🙂

@Cptnbond Жыл бұрын

Awesome video, and this was really helpful and full of valuable tips. Cheers.

@offgrid_power Жыл бұрын

Glad it was helpful!

@philpowell6915 Жыл бұрын

I hope that's everything sorted for ya now mate. Keep on keeping on..... Nice job 👏 👍 👌

@technopirate5050 Жыл бұрын

Yes very good presentation thanks heaps for the effort

@tine8849 2 жыл бұрын

Nice just what I needed, I think my cells will be arriving from China next week, so this is very useful.

@offgrid_power 2 жыл бұрын

That’s great! Hope it’s helpful for you! What cells did you go for?

@omarm7mad211 4 күн бұрын

I want to thank you from my heart for the wonderful work that you have done. I want a way to charge the energy that you have built through solar energy. I am from the Middle East.

@andreyl2705 10 ай бұрын

Thank you. Very useful

@SunsetSlimess Жыл бұрын

Very nice video, will make it easy for people to build their own batteries. I would suggest mentioning that jewelry should be removed and using shrink tubing on metal tools to insulate. Experienced people know how to be careful and still have accidental arc sometimes, so beginners should be extra cautious wherever possible.

@SecurityisaMyth 5 ай бұрын

Well Done! Thank you.

@User1462uuw8w 10 ай бұрын

Very interesting video! Thank You very much for informative presentation!

@offgrid_power 10 ай бұрын

Glad you enjoyed it!

@citizengkar7824 2 жыл бұрын

Nice vid. Thanks. I was under the impression it was a good idea to separate the cells with an insulator: some use fish paper; some use acrylic sheet; others use kapton tape, to individually wrap the cells.

@offgrid_power 2 жыл бұрын

If your battery is in a high vibration/movement situation (like a boat) then that is definitely advisable. IMO, in most van/RV scenarios it's not necessary. I don't know a single person who's had a problem where the blue plastic has worn through and the cells have shorted.

@brianmi40 Жыл бұрын

@@offgrid_power You state yourself that fully discharged the cells will be able to move, so I can't agree that they shouldn't have something in between to resist wear of the shrinkwrap. The roads and potholes I've driven in my van conversion would definitely see those cells rubbing when discharged. Seems like an ounce of prevention for a pound of cure.

@gogogo1064 10 ай бұрын

@@brianmi40I'm glad someone of superior intelligence is here to set him straight 🤣😂🤣😂🤣

@kimmogensen5390 10 ай бұрын

@@offgrid_power i have a qestion i am running a 8s lipo with daly 200A bms , and are now in the process of building another 8s with a daly bms , is it true that one can not run packs like that in parallel??? the packs are both the same size 280ah one is a daly 100A smart the other is a daly 200A

@boybravo689 2 жыл бұрын

Thumbs up new subcriver of your from the philippines sir you taught me how to make a battery pack and i have no training in a electrical techical school tnx for your video for a detailed tutorial

@offgrid_power 2 жыл бұрын

Hope it was helpful for you!!

@omarfa1367 9 ай бұрын

Excellent video, thank you!

@offgrid_power 9 ай бұрын

Glad it was helpful!

@Ivansgarage 28 күн бұрын

Excellent video very detailed....

@robertbalkovec4087 Жыл бұрын

Instills confidence for us beginners :)

@waynejones3340 2 жыл бұрын

Great video mate 👍

@offgrid_power 2 жыл бұрын

Glad you enjoyed it! :)

@broosch 4 ай бұрын

Great video! I’m planning to build something similar but for prepping purpose as backup power. Love your compression box design even though I would cover the sides for various reasons. What about the charging interface? I’m planning to add a dedicated XLR connector in the box for easy charging. And maybe an Anderson connector for external loads. I would also add a manually circuit breaker for additional safety.

@hillscanlon2717 Жыл бұрын

Thanks Roger great video. I'm going to start on my own battery soon, could you please advise on what size of daly bms you are using and also can I use a 12v car charger to top balance the batteries. Thanks for your great work.

@waynesarahburns3871 2 жыл бұрын

Brilliant video, giving me the confidence to crack on with it 👍

@offgrid_power 2 жыл бұрын

Glad it was helpful!

@sailingsmalldreamingbig9022 Жыл бұрын

Very useful, thanks a lot!

@3D_Printing Жыл бұрын

Highly detailed video; add to my Energy reduction playlist, and liked of course :)

@offgrid_power Жыл бұрын

Thanks for the support! Glad you enjoyed the video!

@3D_Printing Жыл бұрын

@@offgrid_power thanking YOU for a great helpful video. P.S. l living on a low budget so can't afford to save money by buying and using a method like these. I wish I could.

@lklmmedia4715 Жыл бұрын

I have EXACTLY the same Yellow flat Crimper that I've had since the 80's as well - and looks Identical in general wear marks, etc. It's the Go to, because it was Built just perfect back then

@offgrid_power Жыл бұрын

They don't make them like they used to. ;)

@MrOverclocked92 2 жыл бұрын

Like the video, am just getting ready to build my first batteries and this was a great step by step. Do you happen to have a pdf of case plans / dimensions? I really like how simple yet complete it seems to be.

@offgrid_power 2 жыл бұрын

We don't have one yet, but we were thinking of putting one together, so we definitely will do that!

@SakCyb Жыл бұрын

Thank you very much this was very useful information. I started building my box this afternoon. Not going to go that big I only have 120AH cells. My box will be just a bit smaller. But the basic design is exactly the same,

@offgrid_power Жыл бұрын

Glad that the video was helpful!

@goodv1b 5 ай бұрын

What do you set for the active balance parameters? Great guide, I followed your instructions and have set up my battery with the exact same daly bms. Thank you!

@samiulrehman3925 Жыл бұрын

Hi you Did very well

@Lzawy 3 ай бұрын

helpful! thx!

@pavelsedov9982 3 ай бұрын

Отличное видео! Спасибо😊

@JanSur Жыл бұрын

Hi, thank you for your videos, can I skip top balancing if I will use JK BMS?

@stevieboi61 Жыл бұрын

thankyou for sharing.

@offgrid_power Жыл бұрын

No worries

@josesoto3933 6 ай бұрын

Hello from Tennessee, USA. Thank you for sharing this awesome video. I followed your instructions to the best of my abilities and understanding and now I have a battery pack on an insert similar to yours. Have a question about connecting to solar. I have 2 100 watts Renogy panels connected in parallel and a Renogy Wanderer 30 amps PWM charge controller . The positive connection added to the positive side and the negative side on the battery pack. I see the battery draining (using Daly BMS app) when connected connected to 2000 watts Giandell inverter. Not sure if the battery is charging with the panels. Have watched several of your videos but none explain how to connect to solar and how to monitor using the Daly BMS app. Do I need to connect it in a different way?

@petruemanuelcocean2646 Жыл бұрын

awesome video, i just have a question no one seems to explain, the cycle rules apply only when the charging/discharging is complete, how does using them during the day attached to an inverter while being charged by solar affect the cycles, how are they calculated? i really can't wrap my head around that

@mflo1970 3 ай бұрын

Enhorabuena es la mejor opción paquetes de 4 celdas hacen que se puedan mover muy bien sin que tu espalda sufra demasiado

@duanechampeon9300 Жыл бұрын

Good video. I'm not sure I like stressing the negative connection the way you bent it in. Cut some half hole saw cuts for the handles. Just a thought.

@offgrid_power Жыл бұрын

Thanks for the suggestion.

@Ulbre 8 ай бұрын

Now that, folks, is one great video :) :) :)

@kostasdrama 4 ай бұрын

Hello Great video, i have a question, i have DALY 12v , 4s, 150Ah with bluetooth, do I need an extra Active Equalizer Balancer (i see many use both of them at the same time) knowing that DALY act as Active Balancer? Thank you

@mikeconnery4652 11 ай бұрын

Nice video

@offgrid_power 11 ай бұрын

Thanks

@jopil169 2 жыл бұрын

Great video, the best I watched and there are 100s of them now. Thank you very much. 2 questions please: 1. When topping up with 3.6v charger - if there are no amps showed, how can you be sure it is full and that your cell is not overcharging? 2. The BMS power relates to max load going, not to the battery size? So even with massive battery, if your need is modest, eg. 80A max is it enough to buy cheaper model? All the best, Jo

@offgrid_power 2 жыл бұрын

Hey Jo! I'm glad the video was helpful! Any suggestions on anything we missed or would be helpful for us to cover, please let us know. In answer to your questions: 1. As long as your charger doesn't exceed 3.6v, then you should be fine. I would be cautious of Power Supply Units (like this one: geni.us/iAk3) as sometimes they can be a bit strange and change voltage, etc.. I've had times where their voltage changes a bit so keep an eye on them. We tend to use a charger like this to finish top balancing: geni.us/Wate365vCharger 2. Yes, the BMS should be sized according to your draw or charge requirements. Most Daly BMS have half the charge capacity as their draw capacity (e.g. 150A BMS can be charged at a max of 75A and draw at a max of 150A). Some of the BMS have slightly different balance voltages. Generally the higher the amperage of a BMS, the faster it'll balance the cells. That said, if you have a 560Ah battery but only require a draw of 80A, there's so reason to buy a 200A BMS. Just go for a 100A BMS. The only reason you might want a "big BMS" for a "big battery" is if you intend to charge it at a very high amperage. One other consideration though is that if you buy cheaper/less quality cells, getting a higher amperage BMS to balance "faster" might be worth considering. If your cells are not well matched and the delta between them is significant, then consider a higher amperage BMS as it'll balance your cells faster. Hope this is helpful! :)

@konradpuchatek6071 2 жыл бұрын

@@offgrid_power thank you!

@PowerGearPerformance 7 ай бұрын

Awesome build. I've got 8 EVE 280ah batts. Maybe I can squeeze them into two old Trojan J305 cases.

@luckydogfarms 2 жыл бұрын

Subscribed! Thank you for sharing! We have similar battery projects here in Idaho on our Lucky Dog Farms channel.

@offgrid_power 2 жыл бұрын

Thanks! We'll check it out! :)

@DCSooner27 Жыл бұрын

Can I use the same bus bars to connect the cells for top balancing that I use to connect for long-term use? Or do I need a new/separate set?

@williamcassedy8349 Жыл бұрын

I am in the process of designing and building a "portable" 280 AH LiFePo4 battery. "Potable" in that I will be moving it between our popup camper and large (41') Marinette Marquis cabin cruiser boat. We can't be in 2 places at one time so it seemed reasonable (and economical!) to have the ability to have a battery that could move between the two with us. We don't use the camper that often so the movement between the two will be minimal. The construction will use a large tool box as the housing of the components. All below components will fit (some already acquired) inside of housing) - 4 - 280AH LiFePo4 cells (acquired), - the 280AH cells are to have a 1/16" to 1/8" separator between them, - 1/4" foam medium density foam cushion (think 'walk/stand on "fatigue reducing mat") on the bottom of the box to absorb jarring during vehicle movement (highly likely pulling camper on road trip), - a single 20A Victron DC - DC charger, (acquired) - a Daly 200A BMS (acquired) - Heavy gauge battery thru wall battery connectors for hookup to the vehicle's feed from the house battery, (acquired) - #1 (#2 or ???) gauge cables to battery side of 2000watt inverters (1 each in each vehicle - camper already has 1 as I used 2 - 6V golf cart batteries initially but their several years old. Boat' never had an inverter system) - (not part of 'portable battery' but just FYI) 2000w inverter. My primary question: The 280 AH cells I bought (from 18650 battery store) utilize dual buss bar welded on terminals. They came with solid straight nickel coated copper buss bars. My concern is with jostling and possible movement/shifting and the buss bars potential for movement/loss of solid connectivity. To mitigate this, I'm considering making up my own buss bars using welding cable & crimp on lugs. I have a hydraulic crimper to ensure a solid fit/connection. --> what gauge copper cable would you recommend for the intended buss bars? .... or do you recommend anything, buss bar-wise, else?

@markanley4099 Жыл бұрын

Very good tutorial, I'm learning a lot from your video's, keep up the good work its very much appreciated. I'm about to build my first battery and I'm looking for a charger. I have a Halfords smart charger with lithium charging function but I'm not sure if I can use this once I've done the top balancing. So, please can you advise if I need to buy two chargers or just the one? Thanks

@offgrid_power Жыл бұрын

Glad the video was help! I probably wouldn’t use the Halfords charger, personally. I would buy a name brand that’s known for being reliable and good, for example Victron, Renogy or Votronics.

@markanley4099 Жыл бұрын

@@offgrid_power Thanks👍

@MacMcCabe2456 Жыл бұрын

I would !one to build a 36 Volt DC battery pack for my EZGO Golf cart if you have any ideas of what would work best. Thanks !

@MrSkyrider226 Жыл бұрын

it was explained very well now i relly want to tru this but put it on solarpanel 😀

@offgrid_power Жыл бұрын

Glad you enjoyed it!

@jldp2678 2 жыл бұрын

Bravo, et merci de prendre le temps de nous initier à comment fabriquer cette batterie. Pour ma part je préfère, vous la commander complètement finie dans très peu de temps et peut être deux. Je vous souhaite une bonne fin d'année à vous et toute votre famille, mais surtout beaucoup de santé. JLDP

@offgrid_power 2 жыл бұрын

Thank you! I hope you've had a good Christmas holiday! :)

@markweatherall7437 Жыл бұрын

Thank you for your video. Just a query. I have a Bison Battery box. (they are forsale on ebay from a seller called fishingmad) I used the box this year to house my heavy 110ah Numax lead acid leisure battery for my off grid campervan. Question is - is it possible to build a 100ah+ lifepo4/lithium battery/cells to house/fit inside the Bison battery box? I'm quite practical and willing to give it try. Thank you.

@MacMcCabe2456 5 ай бұрын

Any suggestions for a 36 volt golf cart battery ?

@user-vh3vt9mn4i 2 ай бұрын

What about something in between cells just for isolation? i might be missing something, but i am 100% sure that they get warm when using at 1C or even 2C

@betokessler Жыл бұрын

excellent video, congratulations. It inspired me to build mine. But I have a question, if in charging the bms receives a load above the maximum, what happens? for example it can charge 100a and receive 150a. Does it charge the 100a and ignore the remaining 50, or does it shut off and charge nothing or does it burn out?

@offgrid_power Жыл бұрын

See my response on the other video. :)

@davevic8071 2 жыл бұрын

Nice vidéo, bravo ' How many time to top balancing ? All the best

@offgrid_power 2 жыл бұрын

It depends on your charger and the size of your battery cells. For 280Ah cells charged at 20A, you'd be looking at a few days to top balance.

@josephlonghurst7778 2 жыл бұрын

Nice detailed walk through on the build. There are two things that make me cringe, being: 1. The main negative wire from battery to BMS touches (or nearly touches) the positive post of the next cell. With time and vibration this may cause the cable insulation to wear through and short. That would be catastrophic. 2. My understanding of best practices is to place your main fuse as close to your main positive battery terminal as possible in order to minimize the length of wire that is not protected with a fuse. Your build puts the main fuse outside the battery box and potentially multiple feet beyond the main positive battery connector.

@offgrid_power 2 жыл бұрын

Thanks for the feedback, Joseph. :) I think it would be extremely unlikely that the cable insulation would wear through, but it is a good point and given that it would be minimal effort, would be worth changing. When we install batteries, we would normally attach a fuse on the outside of the case of the battery so it's within a few inches of the positive terminal and also accessible if it needed to be replaced.

@citizengkar7824 2 жыл бұрын

@@offgrid_power If it was me, I would also design/3D print some plastic battery terminal nut caps, to prevent any possibility of short-circuit, when building the battery.

@herkko61 2 ай бұрын

Exactly my thoughts too Joseph!

@zerobambiro 2 жыл бұрын

Looks pretty amazing. Would you recommend to close the sides also to protect the battery a bit more? i guess there is enough airflow through the handles right?

@offgrid_power 2 жыл бұрын

Yes, we'll often put sides on the case. We would usually just leave the tops of the sides open enough to allow airflow. So basically put the sides up to the point where they cover the tops of the cells/terminals but with the top 2"-3" open for airflow. :)

@zerobambiro 2 жыл бұрын

Thanks! I watched so many videos, where people build this batteries, but this is hands down my favourite one. I will build it exactly like this. Also pretty nice that you saved me some time including all the measurements. Just amazing!

@tracym427 Жыл бұрын

How much swelling can one expect on these cells? I just got 4 and have been charging them at 8 amps(auto shit off) and one of the 4 swelled out on the sides. They are not squeezed together yet. Thinking abt fully discharging before I build a case like yours to see if the swelling goes away. I’m thinking it wont

@elwinpietersz4531 Жыл бұрын

Thanks Roger, brilliant video. It was quite therapeutic to see you working. Extremely educational and helpful. Most people are talking about the challenges around connecting a DIY BMS to an AC inverter using RS485 e.g. GroWatt AC3000. I don't see any useful info when I google. See if you can do a video please. Thanks.

@quaziz Жыл бұрын

Instead of top/bottom balance you can use an active battery balance, right?

@jamesmason7124 2 жыл бұрын

Hello from the high desert of New Mexico USA 🇺🇸. I have a tip for hydraulic crimper users, please don't use the C-frame type crimper because the C-frame can shatter that is why I use a H-frame type of crimper. Don't use a 8 or 12 ton hydraulic crimper on 4/0 awg or larger cables use a 16 ton H-frame hydraulic crimper please. I paid like 60 dollars for mine. Keep up the good work and stay safe and God bless you and your family

@offgrid_power 2 жыл бұрын

Thanks for the recommendations, James!

@normankraus9768 2 жыл бұрын

Thank you for all the LifePO4 videos on your channel! Quick question: the thin wire is really enough to top balance? I miss 2 bus bars so that could be a solution. Just not sure if it's recommended for all cells . Mine measure all 3.3V up on arrival. But the SOC could be quiet different so higher current could be flowing between cells, or not??

@zerobambiro 2 жыл бұрын

For me it worked just fine! :)

@offgrid_power 2 жыл бұрын

Generally speaking, when you top balance you're doing so at such low amperage that it will work fine using small wire like we did in this video. Unless your 3.65v charger is capable of charging at a rate of 100A, small gauge wire to connect the cells in parallel will be fine. We generally top balance at no more than 30A-40A at a maximum.

@js887744 7 ай бұрын

Great video! Question, I’ve seen other videos where they do a capacity test? And some don’t. Do I need to do a capacity test? Or will the BMS pretty much tell me if there’s a problem.

@offgrid_power 7 ай бұрын

If you are not sure if the seller is trustworthy, you should do a capacity test!

@lambo25 3 ай бұрын

hi offgrid power s Where can I get instructions or Do you have instructions on how to build 84V 50Ah lithium iron phosphate battery pack for my E-Bike?

@jalpa9642 2 жыл бұрын

Thank you for this Video....I found it very informative....yet I do have one Question.... Approximately how much did the Battery Weigh in Pounds after it was completed.....? =)

@offgrid_power 2 жыл бұрын

Glad you found the video helpful! :) It weighs around 50lbs. Maybe slightly less.

@zerobambiro 2 жыл бұрын

I nearly finished my batterybox following along this video. It worked out perfect so far :) What kind of cable are you using here 56:00? I realized that mine are pretty stiff and really hard to work with. The ones on the Daly BMS are very flexible.

@offgrid_power 2 жыл бұрын

Hope the video was helpful for you! Here’s the wire we use: geni.us/BigWire

@zerobambiro 2 жыл бұрын

@@offgrid_power It was hands down the best video i could find for that and i watched sooooo many videos.

@jeffallen3382 2 жыл бұрын

I would caution anyone who is new at doing this to be extremely careful not to screw or drill into the battery cells when drilling & installing the bottom wood plate.

@offgrid_power 2 жыл бұрын

Yeah, I think we mentioned that in the video. 👍🏼

@jeffallen3382 2 жыл бұрын

@@offgrid_power ummm.. No you didn't!

@offgrid_power 2 жыл бұрын

👍🏼👍🏼👍🏼

@offgrid_power 2 жыл бұрын

Thought we had, but must be thinking of another video. But yes, it’s very important to ensure you don’t put a screw into a LiFePO4 cell!

@jizburg Жыл бұрын

1:03:25 and 1:16:03

@swss12 Жыл бұрын

The leads sticking out are the final product?

@VitMcG 5 ай бұрын

what are these for? can it powered up a whole house?

@alanosborne1947 2 жыл бұрын

Excellent tutorial! I do have one question are the cells with welded stud better than non-welded studs?

@offgrid_power 2 жыл бұрын

Hi Alan! Hope the video was helpful! :) We've used both the welded and non-welded studs extensively and always lean towards the welded studs. Because the terminals are generally aluminium, the threads in the non-welded studs cannot take the same torque as the welded studs can. We usually would not torque non-welding studs more than about 6Nm whereas the welded studs we're torquing to 10Nm.

@alanosborne1947 2 жыл бұрын

@@offgrid_power Thank You for your reply! I have a source for some cells but all the welded post cells are out of stock but they have plenty non welded cells.

@en2oh 4 ай бұрын

How much do these 12c LIP packs weight in total

@amdtrucking104 6 күн бұрын

It's excellent, except for one thing: Why don't you use dielectric spacers between the cells? The aluminum body of each cell is positively charged, you have them firmly pressed together, relying only on the insulating quality of the thin layer the heat-shrink wrap. That, IMHO, is asking for trouble. Just FYI.

@davidpatrick1813 Жыл бұрын

I see the blue wire and might it have been turned inward and loop under he red wire back to the terminal?

@apocalypse4720 Жыл бұрын

What is the pulse discharge rate on these cells?

@moorejared 2 жыл бұрын

you can fit all of that in that battery box. i've done it. the overkill solar bms fits a lot easier tho

@offgrid_power 2 жыл бұрын

Yeah, we’re looking at putting the Daly 200A BMS into it. 🙂

@78maggs Жыл бұрын

Hey! Maybe someone can help me. I am a complete beginner with electrical stuff and I am setting up a 4s 12v LiFePO battery for my van build. I bought a BMS that has a B- and a P- wire coming out of it. I know to put the B- wire on the battery total negative. What is the P- wire for? What does it connect to? The manufacturer instructions don't say, and I can't find a video that shows it either. Thank you!

@caroleen2000 2 жыл бұрын

Hi, very nice video. Question, you see a lot people who puts extra isolation plates between the cels is there a reason why you don't?

@offgrid_power 2 жыл бұрын

We haven't seen the need to put additional insulation between the cells for the applications we're using these batteries. If they were going into a boat, it would probably be worthwhile. I think it depends on your application. :)

@rogerivy8525 2 жыл бұрын

We do in cases where there would be reasonable vibration or movement of the cells. We tried to pack so much into this video - had to pull some stuff out just to cut down to 80mins.

@servandoavila2786 4 ай бұрын

How do I know what bms to use in a 48 volt battery 105 ah cells

@prohand79 2 жыл бұрын

Hi Roger, I just finished putting 230Ah battery together as you did this one in the video. Can you please advise what would be low current protection setting in your experience? Maybe 11.20v? Thanks Mick

@offgrid_power 2 жыл бұрын

Hi Mick. We made this video recently which shows the settings that we use on the Daly BMS: kzfaq.info/get/bejne/mdWZfJWStdC4qIk.html If you need anything else, let us know. :)

@prohand79 2 жыл бұрын

@@offgrid_power Thanks!

@mihaipitu9172 Жыл бұрын

Hi Roger, tanks, I wish to see the video before I made my horrible compression box 🤣

@offgrid_power Жыл бұрын

Glad you enjoyed it!

@nielsdelrue7242 10 ай бұрын

Why not a extra layer off neopreen bitween every cel ?

@lindsayfraser4791 7 ай бұрын

I am wanting to use the battery in a marine environment. Can you seal the battery box airtight. A great video.

@offgrid_power 7 ай бұрын

In theory yes, but the battery should be able to cool sufficiently especially at high amperage discharge. But if you’re not drawing a high amperage from the battery, then no problem. The chemistry does not require ventilation. The ventilation is really for heat management more than anything.

@lindsayfraser4791 6 ай бұрын

Great. I will just make a slightly larger box.

@YorkshireCampers 2 жыл бұрын

Great Video again Roger! would the battery work with a split charge relay on a van? or do you need some kind of DC to DC converter?

@offgrid_power 2 жыл бұрын

Thanks Johnny! You'd need a DC to DC charger for this. Maybe something like this: geni.us/VictronDCDC or geni.us/VotronicDCDC It's not recommended to charge LiFePO4 with a split charge relay as the charge profiles of Lead Acid & LiFePO4 are so different. Plus the DC to DC charger adds a layer of protection for your alternator and LiFePO4 battery. :)

@YorkshireCampers 2 жыл бұрын

@@offgrid_power that's great thank you :) will need to get a good battery & inverter setup to run a induction hob currently saving the pennies :)

@toastiesvanbuild4644 2 жыл бұрын

@@YorkshireCampers Renogy do a great dc to dc charger with mppt combined 50amp it’s on offer at the moment for £199. I have one and lots of friends have it aswell with no problems.

@offgrid_power 2 жыл бұрын

In the new year we must tie up and we can look at some options for a battery for you guys. 🙂

@offgrid_power 2 жыл бұрын

That’s a good price for a 50A DC to DC. Do you have a link?

@northeastcarpfishing 2 жыл бұрын

Hi Roger what size fuse would you put in main live lead please

@offgrid_power 2 жыл бұрын

We'd tend to use a fuse like this: geni.us/200AFuse in a holder like this: geni.us/FuseBox Obviously sizing the fuse to ensure that your wiring & BMS are protected.

@kennethverhoeven3972 Ай бұрын

when i googled for a hydraulic crimping tool they were all around €4000 wich would be more than the installation im planning, thank god the ones on amazon are only around 40

@reneroman1421 2 жыл бұрын

Hello..... I have a question about a 48v bank of cylindrical lifepo4 batteries... Most of the time they charge up to 54.2V, they never reach 54.4V. Does it affect the batteries at all not taking them up to 100% charge? or is it healthier for the life of the battery that they do not reach that %? ... thanks

@offgrid_power 2 жыл бұрын

It won’t really negatively affect them if you don’t charge them to 100%. If anything, it’ll prolong their life [somewhat] and give you more cycles.

@rosalyn1944 Жыл бұрын

Why is my discharge still showing off on the status screen when it is on in settings?