Polymer Lithium-ion rechargeable battery

Key Specification

They operate and charge AC, DC and USB powered devices. This will let you stay entertained and productive wherever you go.
Key features
 

• Huge Capacity 4000mAh
• Pocket size
• Complete with all adapters for most popular devices
• Auto shut off power saving mode
• Charges your device for up to 40 hours of use(Depending on device)
   

Compatible With
 

• ipod/iphones
• Blackberrys
• Digital cameras
• Camcorders
• GPS,PSP,
• Nintendo
• MP3/MP4
• Bluetooth Headset....

Products features: 
o Battery Type:  Polymer Lithium-ion rechargeable battery
o Capacity:  4000mAh/3.7V
o Output Volts:  5V +/-0.2V 
o Output Current:  1000mA (Max)
o Charge Mode:PC USB port or AC adapter
o Charging time: about 6-7 hours via wall adapter 
o Product Size: 108(L) x 61(W) x 15 (H) mm 
o Protect function: short circuit, over-current, over-charging, and over-discharging
o Net Weight:  106 g 
o Cycle life: over 500 times
o Working Temperature: -5°C~+ 55°C
o Storage & Shipping Temperature: -20°C~+ 70°C