Feature:1. The power module is designed to fit for Raspberry Pi motherboard, allowing it to work offline for up to 9 hours.2. There are 2 USBA ports on the board, one can power the Pi motherboard and the other can power the integrated LCD screen.3. A simple copper pillar and for Raspberry PI motherboard can be used for cascading installation.4. Fine workmanship, long service life, not easy to damage, can be used for a long time.5. Establish strict quality control standards and improve the design to increase durability.Specification:Condition: 100% Brand NewItem Type: Lipo Battery Expansion BoardMaterial: PlasticColor: As picture shownBattery Capacity: 3800mAHMaximum Discharge Current: 1.4A No-load Output Voltage: 5.1V 0.1VStandard Charging Current/voltage: 1.0A@5.0VFull Cut-off Voltage of Lithium Battery: 4.18V - 4.2VFitment: Fit for Raspberry Pi3 CHG LED Function:On: The charger performs constant current charging.Off: The charger performs floating charge until the lithium battery is fully charged.ON LED Function:On: USB-A interface outputs 5VOff: The USB-A interface has no voltage output..Package List:1 x Lipo Battery Expansion Board12 x Screw AccessoriesNote:This product does not include battery.