Masione Replacement Battery for iPod Nano 2nd Gen 2GB/4GB/8GB 616-0283 With Tools Brand New | Li-Polymer | 3.7 V | 400mAh Compatible with iPod Nano 2nd Gen 2GB/4GB/8GB This is an internal part and some minimal technical skills are required to replace it Tools are provided to open ipod and replace battery 30 days money back and 1 year warranty