Battery consumption : normal or abnormal

It is abnormal if the Android OS has the same percentage, close to or higher than of the Screen.
Last week, with my super battery, the battery drained so fast. From 100% to 10% in 4 hours. I noticed the strange in the battery consumption which was too much on the Android OS, so I wiped up the phone (factory reset). And then the battery consumption got back to normal.

Original Nokia N97 Wall Charger is on sale in eBay

view it in eBay!


Some history


I bought Nokia N97 last year.  All the accessories are with my friend abroad for some reason except this wall charger (and a stylus which I will sell it too later) .  I just don't know what to do with it so I decide to sell it on eBay.

Other details

It was rarely used as I had a situation where I forgot to bring the charger and I decided to buy a new charger being an impatient person.  Therefore, it is in a perfect condition.

Specifications

NOKIA AC-10U
INPUT: 100-240V~/50-60Hz/160mA/16VA
OUTPUT: 5.0V/1200mA
MADE IN CHINA B