the diodes in the alternator have gone
The voltage reg is sticking and will run down the battery.
I had the same problem with my 2000 xterra and it turned out to be low battery voltage. Check your battery this is most likely your culprit. Mudlvr
The battery will drain noticeably faster if the wireless feature is turned on, even if you are not shopping in the kindle store or using the browser. It can be conveniently switched on or off at any time by hitting the menu button. Having wireless on drains the battery but does not really 'wear' the battery down and shouldn't cause any damage. Just turn wireless off when it is not needed or if the battery is running low.
something is causing a drain on the battery when switch is turned off
That sounds suspiciously like a corroded battery terminal.
Chemical energy in the battery is turned into electrical energy when the battery is hooked up to an electrical circuit.
battery iz dead add it in new battery.
The bulging is caused by gassing. This is caused by overcharging or by a short circuit inside the battery. The acid inside the battery is turned to gas and it expands the sides of the battery.
Sounds like the battery has a dead cell
No, the alternator recharges the battery. Of course the alternator is turned by the engine.
get a new laptop
As long as the headlight are turned off, you do not have to disconnect the battery.