The Wagan Solar ePower recharges AA or AAA rechargeable batteries and mobile electronics with the sun. Also recharges your mobile electronics with AA or AAA alkaline or rechargeable batteries when there is no sun. Use as a solar cell phone charger by charging AA batteries and use the batteries in the Solar Battery Charger to solar charge your iPhone, cell phone and other USB Devices. Includes cell phone tips. Open Dimensions: 4.5" x 5.3". Weight: 5.6 oz. (without batteries).