Another Lithium Ion batteries question

reed cundiff wrote:

There are arguments going back and forth among LFP users about using battery management systems (BMS)or close monitoring of cells with Fluke meters.

What Reed means here is that LFP (LFP=LiFePo4 is in the lithium ion "family") cells need to be "balanced". Unlike lead acid batts where each cell will balance themselves (balance = same voltage on each cell), LFP batteries can't do that. You have to perform that task manually (volt meter) or have a BMS system do that for you. The reasoning for cell balancing is you don't want to overcharge a cell. Overcharging LI batts will kill them.