FEATURES
 Standard Raspberry Pi extension ports for connecting other expansion boards.
 2A maximum current output for supporting more Raspberry Pi applications.
 Auto switching of charge/recharge path, designed to be against power-down.
 On-board 5 LEDs for showing the batteries’ status
 On-board Maxim fuel gauge IC
 Support reading battery information via I2C
 Lithium battery charge/discharge protection and over-heating protection
 Anti-backflow mainboard power source