My iPod video battery died recently too. I searched around on a few different sites and finally found a new site that sells iPod batteries. It's called ipodjuice.com. They sell two different batteries for the video iPods. Both have longer battery lives than the original Apple battery does, and there is also a 10 year warranty on all the batteries. I was a little nervous doing the replacement myself but if you follow all the directions then it's pretty easy. Hope this helps!
Thanks. But I found the answer to my question. It actually takes four hours to charge the iPod. My iPod always said that it was fully charged after 2 hours so I just stopped it. After charging for four hours, it works fine. Thanks anyway.