Hello. Im after info on what is considered acceptable battery usage of the A500. I have a A500 (updated to the latest software version) and a series 1 Ipad. The ipad seems to hold its charge for weeks with occasional use without charging however the A500 was fully charged this morning then left on a desk all day and when I went to use it tonight it had lost 50% of its charge doing nothing all day. GPS and Bluetooth are turned off. The battery usage screen says that 48% of battery was used by 'Tablet Idle'. Ive installed a few apps on it but nothing much. Any ideas?