Here's what I have, from About This Mac (I wish there was a way to post pics here, I'd just do a screen shot).
"OS X El Capitan Version 10.11.6
MacBook (13-inch, Early 2009)
Processor 2GHz Intel Core Duo
Memory 2 GB 667 MHz DDR2 SDRAM
Graphics…
Quick update. I've just installed a new aftermarket battery from Siker (off of Amazon). $20, and it appears to be working perfectly. No issues with charging or detection. I noticed a lot of people complaining at Amazon about batteries either not fit…
Feeling stupid at the moment. Having built my own desktops for several years, among other things, I should have caught this. Pulled the battery to discover that the top is now domed quite nicely. The last time I looked, a few weeks ago when this sta…
Sorry, I'm not familiar with the correct terminology. It would be that the casing is peeling away from the battery. I don't think the battery is swelling. I'll have to take a closer look at it now. Thanks for the help.