My notebook is already 4 years old, and it's battery basically died from one day to another (one day it could support the notebook for an hour, the next day I could get at most 2-3 minutes out of it). Of course I'm looking into replacing the batteries, but I have a strange worrying feeling that it was my AC adaptor that killed the batteries, as it's also quite old already.
The computer works perfectly fine when plugged in via the AC adapter, so I'm not sure whether I should also buy a new adapter as well with the new battery, or whether my worries are unfounded and getting a new adapter would just be a waste of money?