I'm building a 20s Li-ion moped battery divided into 5 IP67 waterproof boxes of 4s each, and am looking for a BMS that can measure at least one temperature in each box. I have 4 unused pins in my chosen balance connector to each box that can be wired for temperature sensing. I've looked at Daly, Lithiumbatterypcb, Vruzend and a few random google hits, but haven't been able to find what I'm looking for (partially because of bad photos/lacking documentation in the web shops).
The BMS will have its own sealed box, so IP rating for the BMS is unimportant. I'd like PC cable and BT mobile app support, but if I have to pick one, I'd pick temperature monitoring. Any recommendations? Preferred cost <110 $/100 €. The size is preferrably <170mm on the longest edge, though a longer one could fit diagonally. I'm in the EU.
The BMS will have its own sealed box, so IP rating for the BMS is unimportant. I'd like PC cable and BT mobile app support, but if I have to pick one, I'd pick temperature monitoring. Any recommendations? Preferred cost <110 $/100 €. The size is preferrably <170mm on the longest edge, though a longer one could fit diagonally. I'm in the EU.