SOSCharger is a Hand Crank Mobile Phone Charger and External Battery in One
Ever find yourself out of battery while outside? Here’s one external battery solution that not only provides emergency battery juice but also lets you charge it up using elbow grease by cranking it up manually.
The SOSCharger is basically an external battery for devices that are compatible with USB port charging. You can use it in the same way you would just like a conventional one, like charging it using a computer or USB AC adaptor, and then use the stored energy for juicing up your mobile devices on the go. However on top of the common charging source, it also comes with a hand crank.
With the hand crank, it is capable of converting kinetic energy into an electrical charge that can be stored in its 1500 mAh lithium-ion battery. The way of charging by using the hand crank method is by no means fast as 3-5 minutes of winding up the device provides only about 5-12min of talk time, though it will be good enough for emergency situations.
For those who prefer the eco-friendly way, cranking up the external battery manually instead of drawing power from the grid will enable your device to run solely on clean power generated from yourself while burning off some calories doing that.
A cool external battery solution that is both practical and eco-friendly.
More info on the SOSCharger on Kickstarter.