Mojo BattStation Optimus utilizes a 20400 mAh high-capacity battery, providing eight full smartphone charges in its compact shell. Mojo BattStation Optimus utilizes a 20400 mAh high-capacity battery, the same Panasonic cell that powers electric cars, providing eight full smartphone charges in its compact shell. It features a 2.1A and 1A USB port! $129.99