I think i have found a problem wit my Lumia 920.
It doenst charge that quickly anymore.
Normally i got 42% charge speed.
Then it drop to 23%
and today it's only charging at 18%..
Does onyone have the same issue???
My charging rate always tapers off at the end of the charge but the average rate is still 25%. This is stats since 10/25/13 on my 920.
I don't think you can compare instaneous charging rates.
i had the same issue wiz my 920 after black update.. but when i restarted the phone while charging it showed more battery percentage, it was 26% and after restarted it showed 46% so maybe the battery is bugged