Have you tried running the phone all the way down the charging. Could just be a calibration issue.Charged over night got to 98%. Unplugged and plugged in went to 100%. Unplugged started to use an app (currency exchange rate checker) and it dropped back to 98%. The battery lasts as expected during the day, so not a problem just strange.
That would not be a valid reason why your phone would not charge to 100%. The charger converts the AC wall outlet power to 5 volts DC to charge the phone. The charger can provide that 5v output for an AC input range of 100-240VAC, and 50-60Hz, so it can be used around the world.Yes, I did have the issue and solved it by removing the extension cord between the charger and the wall plug. It seems there was too much resistance caused by the extra bit of wire. I'm not electronically gifted at all but I did read that might help and it did.
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Great news and thanks for reporting back. So the solution was to wind the battery down to zero and back up again.Finally been able to run the battery flat and it has gone to 100% on subsequent recharges..