New Replacement Battery for (all) iPod Classic 5/6/7 Models.Originally, a thicker 850mAh battery was used for 5th Gen 60/80GB Models, and the 6th Gen 160GB.And this 650mAh was used for the other models, 5th Gen 30GB, 6th Gen 80GB, 6th Gen 120GB, and 7th Gen 160GB.