Consumer Eletronic Show: 2018 DISCOVERY! The Energizer Solar: [ (888) 404-9010 ], Powerkeep
36 Solar Charger. [Details] / [Owner's Manual]. Available on Amazon.Com.
The Powerkeep system uses a lithium battery that stores enough
energy drawn from solar energy to power up four smartphones. Take a look! It
was slim and could fit inside any size of suitcase.