Voberry 50000mAh Backup External Battery USB Power Bank Pack Charger for iPhone iPad HTC Motorola Samsung Blackberry (Black) 50000mAH High capacity rechargeable power bank is perfect for power-hungry smartphones, tablets and other devices Built-in short circuit, over-charge and over-heat protection allows for safe, fast and reliable charge while on the go Three LED lights work as charge indicators to show battery level or charging status Slim compact design with a hard, metal casing and LED lights Voberry is a protected Trademark