If you have an iPod battery that’s showing its age, replace it! I recently ordered a 2100mAH battery from TechRestore for under $30 and now the iPod is like new. The case took a bit of tweaking with the provided tools to crack open, but it was non-destructive and uncomplicated. Since it’s a Gen 1 iPod I plan to keep it running just about forever and this will help quite a bit – it’s better than new now.