I have the battery a couple of weeks now in use and am very satisfied. A smartphone Samsung Ace 2 is loaded with me The battery lasts for a full charge on the phone and has subsequently a remnant. The lamp is super bright. Operation could not be easier. The battery I have always with you and when it is just the cell phone, I hang him on it and on it goes. The shortages of previously are resolved. The quality of workmanship is impeccable. I can fully recommend the unit.