Amazon.com: DALY Smart BMS 4S LiFePo4 12V 250A with UART Communictaion Bluetooth BMS Cooling Fan for Rated 3.2V Lithium Battery Power Bank Protection,Off Grid Application, Solar System : Electronics
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
NEU S BMS 4s 12v 100-150a Ln Lm Pn B B Vn €34.76 hittech.com
4S LiFePo4 Smart Buletooth BMS 20-35A with Bluetooth Android /IOS APP UART or 485 communication [4S 20-35A Bluetooth BMS] - $24.70 : Zen Cart!, The Art of E-commerce