iPod touch Ipod touch battery?

I was sitting on my couch playing a game on my jailbroken iPod touch. My iPod is 8 gigs and has 2.2.1 firmware. The 20% battery notice came and went. A bit later the 10% came. I shrugged them off because I was too lazy to turn on my computer and plug it in. After a while it went to my wallpaper and then went blank. I can't turn it on, tried putting it on my dock, plugged it in to my computer, but it doesn't respond to anything. I've had my iPod since July. Is there anything I can do without replacing the battery or sending it to Apple? Thanks in advance

I didn't know DFU mode would work at all, but it looks like it did