I'm hoping to build a lithium titanate battery pack from cells off eBay/AliExpress and looking for BMS recommendations. The BMS choice should take into account:
Any BMS recommendations or comments on these criteria? Thanks!
The voltage of LTO cells is about 2.3 V nominal, 2.9 V charged, and 1.6 V discharged (the exact numbers vary by manufacturer).
About 15 cells in series to make an approximately ~36 V battery (no parallel cells because each one is usually at least 20 Ah)
The cells are said to handle charge currents of at least 5C, so (for 20Ah cells) 100 A. That's probably more than I can provide but I'd like to try something like 20 A charging.
I heard from a friend that the internal resistance can be quite variable between cells so that balancing is important. I think this means I should get a BMS with a high balancing current and/or can balance well before the cells reach full charge?
Any BMS recommendations or comments on these criteria? Thanks!
