I messed up on my older laptops.
My older Dell went great for several years because I used it.
Eventually the battery did quit holding a charge. In that case it was for old age, but partly because of less use.
Bought a new battery pack, but also a new laptop so this one sat idle for months.
Guess what? Won't hold a charge. I blame myself for that.
I don't use the newer one as much as I used to so I have to remember to charge it and fire it up every so often.
There is one possible problem in this particular case other than the batteries themselves self-discharging to a useless level:
The battery electronics are set to go into hibernation after a month or so of non-use. Plugging into the charger is supposed to wake it up but perhaps the wake up isn't working?
My older Dell went great for several years because I used it.
Eventually the battery did quit holding a charge. In that case it was for old age, but partly because of less use.
Bought a new battery pack, but also a new laptop so this one sat idle for months.
Guess what? Won't hold a charge. I blame myself for that.
I don't use the newer one as much as I used to so I have to remember to charge it and fire it up every so often.
There is one possible problem in this particular case other than the batteries themselves self-discharging to a useless level:
The battery electronics are set to go into hibernation after a month or so of non-use. Plugging into the charger is supposed to wake it up but perhaps the wake up isn't working?