My AGM to Lithium conversion

BFL13 wrote:
Some think it is ok to zero% and experience shut off--except this LFP brand's BMS cuts off higher than that at 5%. There is a lot of confusion over how far down is zero!

The prismatic LFP cells are 2.5 volts minimum x4 = 10 volts. However the cut-off is at the cell level so it would be incredibly rare to get all to 2.5 at the same time. Some might be 2.7 -2.9 but the low cell calls it done.

Scroll down a bit for the general specs. Bulk cells on Alibaba

A pre-made battery may allow cells a little beyond the range or a little inside. That is a warranty call made by the builder.