Never go out of charge with this ideal accessory | Compact and sleek for easy portability | Massive 25000mAh battery keeps your device charged for long hours | Ideal for travel | SUPER Micro USB Universal Fast charge Power Bank with 20000 mAh . Li-polymer battery 20000 mAh High Capacity Double USB Port Universal Portable Power Bank With The Best Quality Main Function and Applications: This mobile power bank is used for charging almost all types of digital devices such as tablets , mobile phones , MP3/MP4 , digital camera , Bluetooth earphone, GPS, PSP , digital frame etc