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OK, now that someone has pulled this thread back to the original question, I will share how I am building batteries for use as a house bank in our boat. I am building four drop-in replacement type LiFePO4 based 200Ah batteries using the Smart BMS reviewed by Will. (Overall installation is...

You will definitely want to think through your implementation. The only reasonable option from the ones proposed is option A (essentially building two drop-in replacements and hoping the internal BMSs don't drop both batteries out of your system at the same time - which is the major problem with...

Thanks! There has been a bit of improvising due to receiving different cells than originally ordered, but it has actually worked out better in the long run. The cells have tested out with higher capacity, while also being thinner (which will be helpful for fitting into the cramped location I...

I have a similar setup (but 12v) that has been in operation for about 1 1/2 years (cruising boat). I have also been seeking a method allowing the batteries to rest at a much lower voltage - REC has not been helpful when I attempted to address this issue with them... Watching this thread with...

Thanks for sharing your tester design, I am using my version (75A load) to test 200Ah AL shell cells purchased on Aliexpress - so far so good (yes, I should have gotten it up to 100A but ran out of pipe). One thing that was tripping me up at the beginning was the meter (PZEM-015 with 300A...