Where can I find a new 2008 Macbook Pro Battery?

Question

I hav had this laptop computer since 2008 and just recently discovered that the battery in the bottom is morphed/melted from too much heat. I read online and they said that this is normal and that i just have to buy a new one. Well, I have searched and I can not seem to find one. Where can i get one of these batteries?

Answer 1

Bulging is not normal, but the Apple Stores are getting hard-nosed about replacing a swollen battery out of warranty.
Apple still sells batteries for all MBPs but they are more expensive. If you do "About this Mac" from your Apple menu and, in the resulting window, click on "More Info..." that will bring up System Profiler showing the exact version of the MacBook Pro you have. The screen will look like this (note I fuzzed out the serial number--don't post serial #s here):
The second line in Hardware overview--Model Identifier--tells us exactly your variant so we can decide the battery that you need. For some MBPs, the 15" and the 17" version use different batteries. If you post the model Identifier and your screen size, we can point to to a specific battery.
Personally. I am somewhat reluctant to recommend eBay or similar sites. There are a number of reports here of auction site batteries sold as "new" arriving with 20-40 cycles on them. That's not "new." There are also some counterfeit batteries, branded Apple, but are inferior.
I know the batteries that Apple sells are not great (my MBP from Late 2007 is on its second bad Sony battery), but third-party batteries seem worse based on posts here. You need to be careful if you go outside the Apple product line. If a responder here says they found a great third-party battery that lasted a long time, consider that but only from the same vendor the happy camper used. Ask  for a link that's not ebay.