I got a replacement apple g4 12" battery shipped to me after putting in my battery, computer, and shipping info into the apple support site. The notice in the box says I should return the recalled battery. Do I really need to do this? They don't have my credit card information or anything so how would they charge me if I didn't return it. I want to just keep it as a backup in case I ever need it. I've never had any problems with it so I'd rather not return it. Has anyone kept the recalled battery? Did apple ever contact you about it?