This from Sony website:
To ensure the proper operation of the battery, please do as follows after charging the battery.
(1) When charging by connecting the AC adaptor directly to the camera Pleasedisconnect DC IN from the camera after charging is completed. Also, itis recommended to remove the battery from the camera when charging iscompleted as the battery is discharged slightly even if the camera isturned off.
(2) When charging with the supplied USB cradle Ifthe camera is installed in the USB cradle, please leave the power cordconnected to the outlet (when using the power strip, please leave itsswitch to on).If you want to unplug the power cord (or switch off thepower strip) after the battery has been charged using the USB cradle,please remove the camera from the USB cradle. Also, it is recommendedto remove the battery from the camera when charging is completed as thebattery is discharged slightly even if the camera is turned off.
NOTE: When you charge the battery by connecting the AC adaptor directly tothe camera or using the USB cradle, do not leave it with the power corddisconnected from the outlet.
Should it not work, continue with the manual reset procedure below:
- Turn off the camera.
- Ensure the camera is not connected to an AC power adapter.
- Remove the battery from the camera for 15 seconds.
- Reinsert the battery.
- Turn on the camera.
NOTE: If the issue is not resolved by performing a reset procedure, service may be required