Geekcreit® V1.0 Lithium Battery Expansion Board For Cell Phone / Raspberry Pi 3 Model B / Pi 2B / B+
Battery capacity: 3800mAH Maximum
output current: 1.8A
Output voltage: 5.1V ± 0.1V
Double USB output
Standard charging current / voltage: 1.0A/5.0V
It can last about 9 hours if only pi 3.
The Lithium battery expansion board can be also used on cellphone.
You can charging this battery even if the switch is turn off.
Raspberry Pi main board is not included!!!