Sony Vaio CR Battery Problem

I have a Vaio CR-190 and am having battery problems. Over the past couple months, my battery would show a full charge when plugged in, but when I would unplug the computer the battery would literally drop from 100% to 80% and began dropping futher. A few weeks ago, the battery would drop from 100% to 50% or so when unplugged and the battery would quickly drain. Recently, however the battery holds no charge at all and the computer will only run through the a/c. My battery management utility shows an X through the battery and says there is no battery detected even though the battery is properly installed. Everything else on the computer is running fine. I'm just looking for some advice on what's the best steps to take next. I've read that Sony has had some problems with batteries suddenly dieing and wondering if that's what it sounds like. The battery is from Sony and is the extended life larger one if that matters.
THanks

 

Sounded like the battery is failing, and NO, Sony is not the only manufacturers that have issue with dying batteries.

cheers ...

 

the battery is only 2 years old. Is that a normal life cycle for a battery?

 

The bastt on my HP died after 1.5 years.It was holding only 45 min of charge.
I bought a 12 cell(extended) but it's to heavy.
I guess that rechargeable batts go bad after few years of use

 

2 years old is good on my book. And I don't know for sure what is a normal life cycle for notebook batteries. Many of them fail right off the bag, many go for long time - like yours.

cheers ...