I wouldn't suggest to take battery applet reports as ultimate battery charge level indicator. It reflects current CPU usage, hence if for example you would disconnect Tablet from charger with 100% battery level, and then execute Canola (for example), CPU would get very busy. At this particular moment battery applet will show less than 7 hours. But once Canola is executed and idle, CPU would get back to idle state and battery applet again will show 7 hours. I strongly recommend using battery-status package from nitapps.com, which gives current exact battery charge level.


My latest overnight test proved that rebooting Tablet often is probably the only remedy for the problem I've described. Yesterday in the evening I've been browsing web with N810, and just before going sleep I've rebooted it and then switched offline mode on. Battery went down just 3% overnight...