Amazon.com: DALY BMS Li-ion 4S 12V 60A with Balance Wire and Temperature Sensor for 18650 Rated 3.7V Battery Charging and Discharging Protection : Electronics
BMS Lithium LiFePO4 12V 4S 40A | Electric Car Parts Co
JBD Smart 4S 60A~200A 12V LiFePO4 BMS Common Port with Balance Bluetooth UART Port Low Temp Charging Cut-Off : GobelPower.com
Daly 12V 150A BMS - 4S LiFePO4 - Bluetooth
4S or 3S 12V Li ion or Lifepo4 Battery smart BMS with Bluetooth function UART and RS485 communication with 60A to 120A constant current – LLT POWER ELECTRONIC