Those crucial times when our phone batteries goes flat leaves us saying the words "Story of my life". 

Well, That doesn't have to be the case anymore with the Gp Instant Power !

• Built in multi-level safety control: over-temperature, overcharge, over-discharge and short circuit protection
• LED indicates to show battery level
• Color:
  • White
  • Black
• Cell type: Lithium-ion battery
• Capacity: 4000mAh
• Input: DC 5V, 0.5A
• Output: DC 5V 1A
• Compatibility: Samsung Galaxy SII , Cell Phone, iPhone , iPad, all digital devices charged via USB port
• Size : 100.4 X 62.4 X 22mm
• Weight: 129g