valkoz posted the following fix but I just can't get it to work. When I put the commans in Android Terminal Emulator all seems to work fine although the battery percentage only reduces to 45% rather than 0% as suggested. I've then re-charged the battery overnight so that it's fully charged.
If I then leave the tablet on stand-by while at work the battery has drained fully by the time I get home when before I've only lost 1-2% of charge.
I've followed the steps twice now with no success and wondered if anyone can help.