Solio Xcellerator USB Battery Bundle
The Solio Xcellerator USB Battery Bundle is powered by AA batteries rechargeable by USB. It can deliver a rapid charge to a Solio charger even if theres no sunlight and the light is low. The batteries can be charged from the sun, or through a USB charging cable or from a wall outlet. When you do have the sun, the kickstand acts as base pivot so that the solar charger can track the suns path.