BAT-9V-USB 9v 800 mAh lithium USB Rechargeable Battery
Shaped like a normal 9v battery this unit provides approximately 8.2v at full charge and operates like any normal 9v battery cell. The only exception is that this unit is rechargeable! Plug in a micro USB port in the back to charge with your computer, the side indicator will show you the current charge of the unit. Please do take precaution and prevention from wire shortage and paying attention to polarity. Lithium batteries can explode from pressure, heat or voltage short.
Charging Voltage: 5v
Charging Current: should not exceed 800mAh
Dimensions: 48.5 x 26.5 x 17.5 mm (L x W x D)
Storage Temperature: -10°C to 45°C