The battery charger I bought for my iPod Tough 1G does not work for my 3G Touch. The 3G prompts me that “this battery charger is incompatible with this device”. There are no compatibility issues using any other Apple charging devices. The battery I have is a generic USB rechargeable (3400mAh, In:5V, Out: 5.5V) that came with 10 different adapters including iPod connector. I have not had any problems with my 1G. Has anybody experienced the same issue? What changes has Apple made in the 3G? Is it possible to modify the iPod adapter to make it work?