Problems with the battery

[Andrey00384]

Телефон лчень быстро садится со 100% до 20%, но с 20 до 0 держит очень долго, как исправить проблему?

The phone lits very fast from 100% to 20%, but from 20 to 0 it keeps very long, how to fix the problem?

GT

[Rhydz]

I remember reading some time ago that this problem can occur if a charging circuit loses its reference point leading to inaccurate calculation of charge levels.  The solution was to:

• Totally discharge the device
• Charge it fully (don't rely on the displayed charge level, make sure the battery is full)
• Discharrge fully
• Chrge fully

repeat this a few times and the charging circuit will regain its reference point.