Hi, I brought a new battery at the official Nokia Shop at amazon.de. Since I use this battery the level is constant at 100 percent. There is no difference also after hours of usage. Only a few second befor the devidce turns itself of because there is no power left it shows "battery empty" message and the symbol turns from the green full battery icon to th red "battery empty" icon. Tools like battery graph are showing a graph always at the same level. Do you have an idea what I can do to get back the normal behaviour? Thank you Uwe