Portable power pack dual usb charger battery capacity 10 000 mah interfaces microusb usb interace output 2x usb type a power output max 21 dimensions 138 x 63 x 22 mm weight 277 g features onoff switch led flashlight battery indicator colour black rechargeable battery technology li ion output voltage 10 v operating voltage 5 v charging cycle ca 500 charging function charges 2 devices simultaneously output i 2 1 a output ii 1 a applications