Everyday after turning off the laptop (not before) I'm unplugging the power supply only from the wall, not from both wall and laptop. But it started to discharge the battery. After unplugging the cable the
power indicators on the laptop continue working for 10-20 seconds and on the next plugging the battery is a little bit discharged - still 90%+ but the battery indicator is always flashing
red and the battery start to charge for a minute or two.
This is not a big problem for me but it's a little bit irritating and I think it may shorten the battery life.
The laptop is Toshiba Satellite A300-15E, 4+ yeards old. The problem started before few months maybe, not sure. I ignored the problem but now decided to ask for it. I think it's caused by the power adapter but don't have access to another adapter and can't try with different one.
I don't think it may be caused by the OS. Tried with 2 different Windows 7 and Ubuntu 12.04.