In Progress Problem Battery

Seems like you need to recalibrate.

Turn off your device
Charge it until its full while the device is off
turn on your device while still connected to a power source and enter cwm
wait for 5 mins
select wipe battery stats
wipe dalvik and wipe cache
disconnect device from power source
reboot phone as normal

Try not to leave your phone connected to a power source for long periods when the device is fully charged as this may de-calibrate your battery/device.