Unable to reach full charge on DK26 Charging Dock

[Skaps]

Hello there! Since last March I'm a proud Xperia Z owner now running on 10.1.1.A.1.253 (4.1.2, unbranded)

I usually get to the night with 20-30% battery left (if there's more, I drain it checking websites until the low battery alert shows up! :smileylaugh:) and leave it overnight charging in the DK26 charging dock. Just recently I've noticed that in the morning, when I pull the phone from the charging dock, it hasn't reached the full battery charge (100%) but 99 or 98%. It's just a very small percentage, but it looks bad 'cause it seems like the battery has deteriorated and it's unable to reach full charge. Nonetheless, through the day it seems to go on as usual, with the usual performance.

Anybody else has noticed this? Can it be a software problem? Unlikely, since the last firmware update was more than a month ago and this problem only showed up recently. Thanks in advance for any input or help!

[Rickard · Accepted solution]

I think this may have to do with how the battery charging works. When the battery reaches 100% the phone will stop charging the battery and when it has dropped a little it starts charging again so depending on when you take the phone out it may not be at 100%.