My laptop battery goes off quickly to 10% why?

I, too, have an Acer laptop with same problem. And like others responding, keep it mainly plugged in. I had a previous Acer with same issue. However, replacing the battery did not correct the problem so I purchased a new computer. I understand being more sensitive to battery care, but in addition my computer randomly shuts down (as if out of power) when it is plugged in. This started about a month ago very infrequently and now happens quite often. Unit is about 1 year old. Any ideas?

Hey, I think that it is behaving really badly because it might be really old. I don't know if it is really old, but that is maybe one reason why. I can't think of anything else, besides getting a new one. Make sure you have a good day, Happy Lotting!!

The battery life of the laptop is about 2-3 yrs. Just try to change power option and performance option . if it still continues than check the battery once.

I have an IBM Thinkpad T60. It is already 3 years old. Recently, I got same problem as you. When I asked to IBM support/service, They suggest to changed it because it is about time to change. Mostly, The laptop battery life is only 2-3 years. Other advise, we are wrong on handling this battery or bad product battery. I mean we have regularly (like once of month) to drain this battery then started recharged on. Don't leave power on while you are not using it.

hi friend i think the reason for this is the improper maintainence..you might be used to keeping it plugged in even on full charging or you might be keeping it on a bad conductor...laptop battery needs proper maintainence ...

All stuff will get weaker and weaker. batteries require special attention. Now i will be more careful with my laptop.