Board Battery Charging Module PCB 4S 100A 12V LiFePO4 Lithium Iron LFP Battery Board with Balance

Works for a external battery pack for trial cams

I am confused about the wiring. Seems like picture one suggests wiring for negative current only. Picture 2 Seems to suggest C- and P- conntect to the battery Positive terminal and B- connects to negative. I wired it in the negative configuration assuming that the BMS cuts off the negative terminal in case of overload. Can it be wired the other way as well or is that a typo?

I’ve bought 12 of these. After testing them two of them failed to cut off the battery drain beyond 11.5 V. I hope the batteries these were connected to are still good but if not it’s an expensive failure.

Purchased this strictly as a charging device, not for actual loads. Works fantastic other than the cell cut out feature doesn't work until 3.75v instead of the industry agreed 3.65v.

I needed to be sure that I could charge correctly to avoid damaging my LiFePO4 round cells. Kept checking periodically as the battery is 12v 400Ah. Everything was looking good and then it wasn’t. One bank was 4.13 volts!!! Very disappointed, Batteries are expensive, don’t cheap out on BMS. My mistake… I bought 5 of these! Tried Warranty link and it says to contact manufacturer directly yet there is no contact information available for this seller.

Built well enough but smallish to be able to handle 10A charging, some images of the BMS show bigger connection holes for the leads. In fact, this item only has tiny holes for the connectors which leads me to believe that they expect you to pass each strand of the wire through the panel and solder them on the other side, a less than desirable practice. Had to return it.