If you want to replace your 3G's IPOD battery Newer Tech is perfect. It holds much more charge than the original battery and they give you the tools to use for replacement.... BUT!!! It is a $%#@ to replace! The manual says, oh use light pressure... f that. I had to use tons of pressure. I thought I was going to break the thing. Once the case is off it's pretty much smooth sailing except for jamming the wires into the case, but shiiit... the case is a damn @#$% to take off.