Battery Question

I was wondering if anyone has this battery
http://images.bestbuy.com/BestBuy_US.../7045823fp.gif

I'm thinking about getting one, because I used mine for pandora, then recovered it, but it acts a little weird (It wont stop charging).

So I wanted to know if this like a regular battery or if it has even a little more battery life, this because it is 2200mA, and the original is 1800mA

I think I'll end up buying it anyway but just want to know if it would last longer

i have one, i get about 2 more hours of playing time then the one it came with

2 hours, woooot da fook, that's great

Now I'll definetly get one