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I'm looking at building a 2p4s battery in this configuration. I was wondering if I could make the top and bottom buss bars from a single piece of copper rather than making individual cell to cell buss bars. The only down fall I could think of would be expansion and contraction of the cells but I...

Does anyone have insight on what is the best order of placing cells when say wiring a 4s pack. If I have 4 cells of different capacity should I put the highest two capacity in the middle of the pack, on the outsides or ??

Looking at making a 12v 460ah pack from 8 230ah cells. Any problems or pitfalls in doing that?

My plans changed for some cells I have and I’d like to put them into my rv. I’d rather not go 24v right now and stay with 12v. That said I have 16 90ah cells and 4 bms’s on hand. I won’t exceed the current draw even for one bms so there’s multiple ways I could go. My first thought is just make 4...

Looking for what people would recommend My max usage will be around 1400 watts (for 30 minutes) I figure I should get a 2000 watt inverter for some wiggle room. Here's what I have for a list...

Got this eve 280ah cell and it looks punctured where the screw goes. Second picture is of one of the other cells

Anyone have suggestions on the next course of actions or who I should contact? So I ordered some batteries from china. It was coming in two packages. Once it hit the states Fedex says they re-labeled my box claiming " Barcode label unreadable and replaced". Well one of the boxes I received was...

My cells and bms took the same time to get to me about 2 months total. Cells all were packed well and arrived with no issues. I ordered double buss bars for my build. First top charged all the cells. The pack took 56 ah to go from 3.35v to 3.6. I then connected in series, taped them up and...

Started working on a design for a custom battery box to fit my needs. The goal will be to 3d print the final parts. I will be using it in a mobile application and being it can get very cold where I'm at I plan to have both active cooling and heating of the battery. I don't have my cells yet so i...

I do a lot of off grid winter camping in my trailer (ice fishing). My ultimate goal is to add solar panels but being we don't have a ton of sunlight in the winter I would like to get a nice 12v-40 to 50amp charger for my DIY Lithium battery (12v / 280 ah) so I can charge off of my generator...