I think I need a new laptop battery
I have this laptop: Review HP Compaq Presario CQ62 Notebook - Notebookcheck.net Reviews
I've been getting a message about how I should change my battery soon, and it doesn't hold the charge. I have to keep my laptop plugged in. Then today it stopped working altogether (coincidentally I dropped it and it slipped off my lap, but I don't know if that's the problem). I picked it back up and it was fine, but after five minutes it gave me a new battery error message, and even though it was plugged in, it wouldn't charge. So it turned off, and now it's pretty much dead.
Anyway, on to my question, I assume I have to buy a new battery. I found this: Amazon.com: HP Compaq Presario CQ62-110TU Battery: Computers & Accessories
1. Will it fit my laptop?
2. Is this a reliable buy or should I just buy it off-line? I'm always nervous about Internet purchases.
3. Anything I could do to resuscitate my battery or is it dead and gone?