First, I'd like to apologize for creating a thread on a technology that there are many such threads in this forum. I have certain questions regarding these cells for a solar build and you all seem to have as good a grasp on them as anywhere else I've come across. I'm just diving into learning about battery technology, so please excuse my ignorance and/or poor vocabulary on the subject. I've done a lot of reading of various threads in this forum, and while a lot of the technical talk flies straight over my head, in general it's been fairly informative. So, if I may, make some statements that I think are true of the battery/bms (along with questions), and if I'm off, could someone be so kind to point me in the right direction?
- The on-board BMS does not have balancing functionality at this time (is this just a matter of time and figuring out, or is there a good chance that external BMSs would be needed for a solar setup?)
- Greentec auto has seemed to be a good vendor for these cells and most testing has shown that the vast majority of cells perform as expected.
- These cells came from the Honda Fit which has been around for under a decade. (If I were to buy 36 24 cell blocks, would there be much of a risk of having wildly different battery cell quality based on how the previous owner drove and treated their vehicle?)
- If I wanted to use the on-board BMS, I'd need to have individual IDs for each string of 18 batteries. (What does that mean exactly for a solar setup?)
- If the on-board BMS does not work for my setup, I'd either have to unseries the 12 cell packs by cutting the tabs between each cell and use a single BMS, or use a separate BMS for each series of cells which would be 36 separate BMS in my case. (how much work and know-how would go into either option?)
- The voltage is odd for inverters and chargers but not impossible to find components without cutting cells out.
- These are safe to use but a over-charging could seriously damage the cells. (any options to handle this without a BMS?)