EvlTech
Simplify Technology - PC and Mac service and support

You can get cheap batteries all over the place, some are junk even when you pay big bucks, I have a new site www.laptopbatterypro.com we sell just DENAQ Laptop, and Camera Batteries, these are knockoffs, but they are equal to any brand in quality and life expectancy. They carry a full 1 year replacement warranty. Check it out Dell, HP, SONY, LENOVO, ACER, pretty much any LAPTOP battery you might need