Could be many cases.
1. Are you using the original charger that comes with it. If not then are you using a 5v 2.1A charger head?
I tried using original charger and usb cable whole night like 6hrs. The batter not only didn't increase, it dropped 5%...
2. Are you using the original USB cable to charge together with the charger? Cause 3rd party cables will affect the output current. And may not be able to charge properly. Too long or too short or too thick or too thin will also affect the charging time.
From start, I all along have been using my HTC phone charger+cable, and it works fine.
3. If you are charging using the computer USB port then stop charging using the computer USB port as it might not even charge at all.
Nope, not charging via pc
4. Is there any super draining apps that are draining your battery other than your screen?
I think there is nothing draining badly right?
5. Are you using a USA pin converter to charge your tablet? Chances are that converter is faulty. Might need to change.
errr my set is the SH foc from contract renewal de. I supposed its local sg set?
6. Check are you using any 3 sockets to one socket extension plug? If so it could be that socket is faulty. Cause there might be a case where by the current load is shared to the limit. For instance I have a 2A charger and a 2A iron and a fan in one socket. There isn't enough current.
Nope.
Check all the above mention first. If all fails then just send in for servicing at Tai Seng 8th Burn Road.