Battery charging problem JB stock

Hi guys,

My phone is on UAE official
Just updated from ics to jb using kies and the charging is taking forever like 7% per hour

While on charge if im using the phone it actually is decreasing the battery instead of charging.

Checked using the current app the charger is supplying 1amp tried various cables and chargers etc and same

Would I need to factory reset or wipe cache after an official update.

By the way on ics charge time is perfect so not hardware fault.

Any reply would be great

Cheers



Sent from my GT-I9300 using xda premium