iPWR iPWR-AP1-WH 1800mAh Backup Battery for iPhone/iPod (White) Highest capacity 1800mAh with smallest dimension, most powerful, top-rated battery pack on market Rechargeable, can be recharged through MiniUSB cable (included) with computer/USB charger or users' existing cell chargers Very compact size, powerful portable charger which can charge all MiniUSB devices on-the-go Complete protection circuits when can protect all MiniUSB devices for over-charging, over-discharging, output shorting, etc Elegant and stylish design, shiny finish