So two months ago I was fortunate enough to get a first generation Macbook Pro 1.83 GHz off of eBay. The only thing it needed was a new battery. No biggie. So I buy a new battery off of eBay for it. The second day I had the battery it started acting up. Dropping a drastic charge and the MacBook would shut off when it got around 30%, sometimes even higher. Also the "Service Battery" started showing up and the MagSafe LED would switch between green and amber. So I buy another battery from eBay, this time a little more expensive from a different seller. This battery does okay for about two weeks then starts it's stupidity. I lose 1% per minute with this battery and the MacBook shuts down when reaching 20-40% charge. And just last night I noticed the battery is starting to inflate! I took it out and put the other bad battery in it for now - just running off of wall power. Now does this seem like I have gotten unlucky with TWO batteries or could there be something seriously wrong causing this? I am running the latest Snow Leopard OS. Let me know what you guys think.