If you not satisfied with your ipod and need more battery life this is can be your problem solution. Try find Sonnettech , this is a 2100mha battery pack for iPod that goes directly on the back of your iPod. It offers 16h of autonomy for video and 80h for music. The battery pack measures only 51×111x26mm. But for now it only available in japan only. no price information for this product.