This module is a lithium battery power bank designed for the Raspberry Pi, allowing the Raspberry Pi board to work up to 9 hours off-line. With 2 USB-A ports onboard, one can supply power to the Raspberry Pi board, and the other can power devices such as embedded LCD screen.
Lithium battery charging voltage: 4.18V-4.2V
It can last about 6 hours if with board and 3.5 inch screen
It can last about 2.5 hours if with board and 7 inch screen
1x V1.0 Lithium Battery Expansion Board