hm but do you leave the cord that charges your laptop in all the time like me? if so then the battery is merely a backup and it isn't used. The energy from the outlet is being used. (generally) a lithium battery could last quite a while if you just do that. I don't use my laptop for roaming purposes usually. airport at the most. idk many people that use a laptop (and use it for home stuff like gaming and w/e) battery til it dies.