So I use Coconut Battery, and when I checked on my battery a month and a half or so ago, it had 79% maximum charge; not bad for a 3.25 year old laptop.
But when I checked it again today, it was suddenly at 21% max charge??
What did I do? Can I do anything to reverse this, besides buying a new battery?
MacBook, Mac OS X (10.7.4)
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
Have you tried to calibrate the battery? Let it drain until the macbook goes to sleep, let it like this for up to 5 hours then plug it in for charging.
Yes, I have. I did this before checking to see if it worked for my model (White unibody) and it doesn't actually do anything, for some reason.
Thank you for the links, but a couple things:
1) I'm trying not to buy another battery if possible
2) I've looked for a battery for mine (White unibody) and the ones you linked are the only ones I've been able to find, and they're not compatible.
2009 Macbook only holding 21% charge suddenly?
