Don't be worry about the power ran out outdoor as this is a secondary power for keeping your ipad working.
Support charging and your computer working at the same time
Rechargeable with no memory effect
Integrated Design, Stylish Appearance,Functional Features.*ipod not included.
Rechargable battery pack
Intergrated rechargeable lithium polymer battery (Much safer than those troblesome lithium-lon batteries) Charge with MICROUSB cableIntergrated 3 light LED status indicator,Indicates charging Mode and current battery life,know before you go.Ipower 6000(Made for Ipad)
Video playback Audio playback Standby time
up to 7 additional hours up to 50 additional hours up to 500 hours
UnitDimensions :261mm*196*mm*24.5mm
Compatible : ipad :16GB/32GB/64GB
Input voltage : 5.1V/2.1A
Charge current : 1.6A
Output voltate : 5V
Output current : 2A
Battery capacity : 6000mAh
Power consumption : 5.1V/10.5W
Working temperature : -15-55°C
ipad battery case