The battery works in Nokia C5 basically good, the life is felt slightly longer than the original battery, but is also new. One point deduction, because the charge level on the phone for a long time is at 4 bars and then innerhalbt an hour falls on a line without use. So you never know when the store is due. With the same battery in accordance with the Nokia E51 is not the case, here the charging indicator falls quite normal down. Of course I can not judge whether this behavior on the battery is charging or to the control / charging indicator on the phone. Therefore Will I still set a original battery.