i WALK Extreme UBS5200D Dual USB (Universal Serial Bus) Rechargeable 5200m Ah Backup Battery (Black) for Smartphones & Tablets Rechargeable compact universal backup battery Impressive 5200 m Ah Lithium-ion battery with Dual USB (Universal Serial Bus) ports Charge 2 USB (Universal Serial Bus)-powered devices simultaneously 21A rapid charging port to charge your tablet Smart circuit protection design keeps your devices from overcharging DC IN OUT port features dust-proof cover Emergency flashlight on back-just press & hold power button Physical Pack Quantity 1 Electrical Rechargeable Yes Battery Type Lithium-Ion Battery Capacity 5200 m Ah Attributes Compatible Smartphone & Tablets Physical Form Factor Rechargeable Battery In The Box 1 x i WALK Extreme Dual USB (Universal Serial Bus) 5200m Ah Backup Battery