Originally Posted by oracleguy
It could be the battery as well. I've found that cheap replacement laptop batteries are cheap for a reason. They aren't tested for defective cells and usually fail a lot sooner so it is total crap shoot on what you'll actually get.
I think the cheap replacement also can work well. My friend who bought a dell battery in pcbatteria.com
one year ago,and it still work well. Most important is that it's much cheaper.