JKBMS B1A20S15P Active Balance Smart BMS 7S-20S 150A 1A Balancer Bluetooth RS485 for LiFePO4 Li-ion LTOOverview The JKBMS B1A20S15P is an active balance smart BMS (battery management system) for multi series lithium battery packs, with built in Bluetooth monitoring and RS485 communication. It supports Li ion (7S20S), LiFePO4 (8S20S), and LTO (12S20S), and provides 1A active balancing with 150A continuous charge discharge capability. Key Features Active balancing: Active Balance (Full State On), balance current 1000 mA (1A). High current design: 150A