https://community.sony.ee/t5/z-series/problems-with-the-battery/m-p/3591486#M117391 <P>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.&nbsp; The solution was to:</P><UL><LI>Totally discharge the device</LI><LI>Charge it fully (don't rely on the displayed charge level, make sure the battery is full)</LI><LI>Discharrge fully</LI><LI>Chrge fully</LI></UL><P>repeat this a few times and the charging circuit will regain its reference point.</P><DIV>&nbsp;</DIV> Sun, 14 Jan 2018 09:58:59 GMT Rhydz 2018-01-14T09:58:59Z https://community.sony.ee/t5/z-series/problems-with-the-battery/m-p/3591485#M117390 <P><STRIKE>Телефон лчень быстро садится со 100% до 20%, но с 20 до 0 держит очень долго, как исправить проблему?</STRIKE></P><P>The phone lits very fast from 100% to 20%, but from 20 to 0 it keeps very long, how to fix the problem?</P><P><EM>GT</EM></P> Sat, 13 Jan 2018 10:26:02 GMT https://community.sony.ee/t5/z-series/problems-with-the-battery/m-p/3591485#M117390 Andrey00384 2018-01-13T10:26:02Z https://community.sony.ee/t5/z-series/problems-with-the-battery/m-p/3591486#M117391 <P>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.&nbsp; The solution was to:</P><UL><LI>Totally discharge the device</LI><LI>Charge it fully (don't rely on the displayed charge level, make sure the battery is full)</LI><LI>Discharrge fully</LI><LI>Chrge fully</LI></UL><P>repeat this a few times and the charging circuit will regain its reference point.</P><DIV>&nbsp;</DIV> Sun, 14 Jan 2018 09:58:59 GMT https://community.sony.ee/t5/z-series/problems-with-the-battery/m-p/3591486#M117391 Rhydz 2018-01-14T09:58:59Z