Check out this cool item! How often are you out and about, and your phone battery is running low? Maybe you have your hobby-grade Lithium packs nearby... well now you can use one of those packs to charge your phone!
The MaxAmps Portable Battery USB Charger is designed to allow you to use your hobby grade LiPo batteries to power devices such as your cell phone, tablet, camera, e-cig, and any other devices charged via USB port. As well as a portable charger, this device will also provide you with quick access to the voltage readings on your battery pack. RC with confidence and don't get stuck with a dead battery.
USB output: 5V/1000mA
Input voltage: DC 7.5V - 25.2V
Battery meter voltage precision: +/- 0.01V
Test for 1-6s LiPo/Li-ion/LiMn/LiFe battery
The USB output will be cut off automatically if any battery's cell voltage is lower than 3.00V and at the same time the LED screen will display "SOP".