This product is the lithium-ion battery pack for iPod: nano, video, photo, U2, mini Capacity: 2100mAh Color: Black 2100mAh Portable ... This product is the lithium-ion battery pack for iPod: nano, video, photo, U2, miniCapacity: 2100mAhColor: BlackWeight: 90gMaterial: plasticDimension: Lmax100mm×Wmax62mm ...