... charger casing grade fire hard plastic material selection, durability 4: Battery-free memory characteristics, charge and discharge, easy to use, 5 ... Battery. * Easy to carry: small size, portable. * Easy to use: the battery directly into ipod/IPHON/MP3/MP4 / cell phone can be powered ... . * This battery is fully charged may ipod/IPHONE/MP3/MP4 / phone ...