These battery can be adjusted to use with most of digital devices such as PSP, Mobile Phone, I-POD Player, PDA, digital camera,MP4, etc. Because of operating Voltage around 4.0-5.5V, it supports all kinds of portable digital devices. It's smaller and cheaper in the world, you not need to carry any chargers for different digital devices, which release you from the embarrassment that the digital equipment is out of power. Furthermore it is used for LED torch. * Specifications: Capacity: 2200mAh Li-ion Input: 4.3 ~ 5.0V 650mA DC Output: 5.0~5.5 V 1.2A Size (mm): 72 x 28 LED lamp: red/green Charging time: 4 hr Battery cycle life: >1000 times LED torch: 10000 times cycle life Main accessories: charger, DC connector, Output and Input lines, user manual * Quality Warranty: (1). CE safety certificate and RoHS testing are ready; (2). 6 months limited quality warranty.