Macbook power

My Macbook has been working fine. I keep it plugged in with wall adaptor whenever possible, especially when at home. My battery percentage across menu at top of screen always holds steady around 97%-98%. Earlier today battery charge was fine. I did not really check percentage this evening, but I just stepped out of the room for a few minutes and when I came back, my computer was off. I could not get computer to come back on.  I checked all connections, turned off power on power strip and turned back on and then computer turned back on. When computer fully booted up, I notice that battery percentage icon at top of screen says 0% and there is a green light flashing on bottom side of computer. Computer has been back on now for 25 min and battery percentage still registers 0%. What happened in this short time that drained battery? Can I still use computer with wall adaptor and 0% battery without harming computer? Thanks!

That Check Battery under Condition means that the battery is failing. How old is the battery?
You can get a new third party battery fairly cheap on eBay. Every MacBook from 2006 through Mid 2009 except the Late 2008 Aluminum Unibody and the Late 2009 and 2010 White Unibodies use the same A1185 battery.
Black Batteries http://shop.ebay.com/i.html?_nkw=macbook+black+battery&_sacat=0&LH_BIN=1&_sop=12 &_dmpt=Laptop_Batteries&_odkw=macbook+white+battery&_osacat=0&_trksid=p3286.c0. m 270.l1313
White Batteries http://shop.ebay.com/i.html?_nkw=macbook+white+battery&_sacat=0&LH_BIN=1&_sop=12 &_dmpt=Laptop_Batteries&_odkw=macbook+black+battery&_osacat=0&_trksid=p3286.c0. m 270.l1313
Or for $129 from The Apple Store  http://store.apple.com/us/product/MA566LL/A?mco=MTY3ODQ5OTY

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    I think we are mixing terms here.
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    Message was edited by: impulse_telecom

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    Something new just happen. I have a big X in the battery icon.
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    Search here for the other 1000 times this has been asked.
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