Digitek Instant Power Bank DIP-10400 L comes in a compact size, which makes it easy to carry this device anywhere. High Capacity of 10400mAh makes this product worth buying. It is one of the most convenient Power Bank, featuring four (4) hidden LED Display Status for remaining power.
Digitek Instant Power Bank DIP-10400 L could be the Best Power Bank for you as this device can quickly provide a boost to Mobile Phone, Smartphones, Tablet, MP3/MP4, PSP/NDS and other by charging them fast. To ensure the safety system of Power Bank, it comes with multiple Safety protection systems. It can work for at least 500 cycles, and it remains charged after fully charge for 30 days, when not in use.
The Li-ion Battery provides benefit from over 500 charge cycles. You can keep track of the battery life with the four LED lights as each of the LED lights will turn on when it reached that power level. When all four lights are turned on, it indicates that this external battery is fully charged. 
The other specifications include 
Input of DC 5.0V-21000mA, 
Output 1 of DC 5.0V-1000mA, and Output 2 of DC 5.0V-2100mA. 
Note: You can carry this Power Bank in your carry-on luggage on an airplane.