Rack-mounted LiFePO4 (lithium iron phosphate) battery. Completely new Class A cells with an estimated service life of 20 years. Built-in intelligent BMS (battery management system), compatible with more than 20 brands of inverters. The LCD screen allows you to monitor battery data. Supports parallel connection to expand the capacity of up to 15 devices in parallel. Inverter data cable (RS485/CAN).