macbook battery?

Couple times lately my macbook has just turned itself off when on battery.

Infact it did it earlier today one moment 91% then the macbook went off.
LED's on the battery was showing 1 flashing led.

Reseated the battery, plugged in the ac adaptor booted back up and Windows (yes im using windows) showed 90% +

Now i'm not sure if its the macbook, the battery or a combination of them both.
I would use cocanut battery but i don't actually have OSX on the hard-drive at all currently.

It's a core duo 1.83ghz macbook, 2gb ram, 120gb hdd and the combi drive.
It must be getting on for 2 years old now, so i wouldn't be surpised if the battery has had it.

Is there anyway to check to find out if it's the laptop or the battery?

bpl323 said:

If it's the laptop it would most likely do this on AC power too.

Click to expand...

That's what I would have thought although I used it successfully on battery last week yet a couple days before that it did the same at first I thought maybe It hadn't shutdown properly and was stuck on (hence draining the battery) but this time I saw that it was @ 91% when it died.


I would have thought if the battery was totally dead it wouldn't decide to work on a battery some of the time