Portable Solar 20000mAh Double USB Solar charger External Battery

Stuck in traffic?  Stuck in the forest?  Stuck without electricity?  Well atleast you won't be stuck without power for your Cell Phone.  This Battery will store power as well as generate power with solar panels.     Nominal Capacity: 20000mAh Type: Solar Cells Foldable Solar Panel: No Flexible Solar Panel: No Material: Polycrystalline Silicon Size: 160*100*12MM Size: 139 x 75 x 20 mm Output: 5V/1A Input: 5V/1A Output Interface: Dual USB Compatible: All cellphones and tablets and other USB devices     Note: 1. In order to fully activate the battery, please charge it via outlet or computer for 10 hours at least at the first 2-3 uses. 2. The energy transformation from solar to electricity is rather slow and the solar charging speed is subject to sunlight intensity and panel conversion rate. In daily life, we highly recommend charge it via wall outlet. 3. Fully charging by outlet takes approximately 10 hours. Do not charge it all day nor over voltage. 4. For safety, DO NOT leave t