This is the best charger I have ever used .It is a must have

The Powerpak Xtreme is by far the best portable power device I have used

I have already taken this external battery charger with me to work, to meetings, in the car, and on all of my short-to-long trips, and it can be used anywhere you go and where you don't have access to power (i.e. car, plane, bus, beach, hikes, parks

Charging is fast and extremely convienent using the 2a port, and the 1a port stands up to par

Also the material used on the batteryenclosure attracts a lot of dust, but it's not difficult to clean it off.*Stats* 220 minutes -3% to 100% iPhone 4S 230 minutes- 5% to 100

All in all.....this is the best all around charger I have used

However, the box it came in almost made the product look like it was used and repacked

There are five led’s that show that relative charge level of the battery pack