Review on 4S 100A 12V LiFePO4 Lithium Battery Protection Board LFP w/ Charging Controller and Balancing Function by Shanna Lopez

The 2.00V undervoltage cutoff in these regulators is absolutely useless for LIFePO4 batteries and will destroy them if you don't take other protections to have . This is not a battery protection board. Additionally, the lack of terminals or heavy gauge wires makes these 100 amp(?) boards very difficult to use. You will need to make solder connections to traces on both sides of the board with heavy gauge wires if you are going to use them for anything other than low current. Not an easy task. Look for something useful. Don't waste money on them. I haven't found any good ones at Revain, but there are a few. I've found some that have a 2.5v cut and are waterproof with power leads.