You'll never be without power thanks to the Battery Bank! The portable battery can be recharged from any PC or Mac witha USB port. Once you've got full power, keep the Battery Bank in your car, office, or even your pocket or purse to provide a portable charge to your cell phone or electronic device! Recharge the Battery Bank using your computer's USB port. Choose the adapter for your portable electronics, including: a. Mini-USB devices b. Micro-USB devices c. Nokia 2.0 d. Samsung D800 e. Sony Ericsson K750 f. Any cell phone or device compatible with the ports listed above, like Blackberry! Simply plug in your device and get a quick charge anywhere you bring your Battery Bank!