The X750-A2 must be use with , it is no use if you just purchase the X750-A2 board.
With four 18650 cells Lithium Ion holder
Ideal solution to increase battery capacity (total battery capacity up to 38400mAh, 12 18650 batteries)
Integrated battery protection circuit
Mounting holes and standoffs provide mechanical stability of the Raspberry Pi, X750 and X750-A2 assembly
Note: The battery and RPI mainboard is not included.
1 x X750-A2 Board
1 x XH2.5 2Pin connector (Cable: 10cm/3.93inch)
1 x Install Screws Pack