Restarting the phone increased battery from 56 to 86?

[ammarmalik2011]

This is the second time it's happened to me on Lumia 920. I went to sleep with around 95% battery, woke up with ~55-60% (abnormal amount of drain). Restarted the phone, and the battery shows 86%. What happened?

 

[yetanotherguy]

Have had this happen a number of times (other times on restarting I have had it diminish as well)... seem to be a calibration issue.... some people mention letting the battery completely drain out once and charging it full again.... but not sure if that will help...

 

[taurgis]

Letting the battery drain completely, restarting the Phone again without charging and letting it drain completely again will solve it for the most part. Its still not 100% correct but for me the difference is now about 4% while it was 20% at the start.

 

[ammarmalik2011]

Letting the battery drain completely, restarting the Phone again without charging and letting it drain completely again will solve it for the most part. Its still not 100% correct but for me the difference is now about 4% while it was 20% at the start.

How do I drain the battery completely and restart the phone without charging?

 

[Coolknight1968]

Read my 8X battery tips. I added a procedure at the end of the post. Note: You need PC browser to see it with my signature!