slight battery problem

so i was thinking of calling dell to ask for help, but i thought eh why not ask here first, this forum is just as helpful.

anyways, so since i received my Dell Latitude D630 on Sept. 7, i have been using nothing but AC power. i ordered the 9 cell, and i have left the 9 cell attached to the laptop at all times. so last night it was fine, at 100% as it should be, running away on AC power. i shut it down as usual, switching off the wireless in the process.

this morning i turn it on, again on AC power, and it tells me my battery is at 96%. what the heck?!?!? how could it have lost battery power when i didnt even use the battery at all last night? or any time before then.

when i shut down the laptop, i always make sure it completely shuts down before pulling the AC cord. and yes i completely shut it down, i do not put it on stand by or hibernate it over night.

 

Batteries lose power over time, simply put - I thought you were gonna say 80% drop overnight; that would be nearer normal - don't get a boner over it.

 

ah i see. sry, i just want to make sure i maximize my battery life and get the most out of it. it just baffled me that it lost power without use.

 

you need to take it off of ac once and a while and fully use the battery. like stretching your legs after a long plane ride...