... Nominal Voltage:3.7V Nominal Capacity:300mAh Application:mp3,mp4,bluetooth,etc. Mp3 battery Specifications:Model:HW502035Nominal Voltage:3.7VNominal ... the same specification of the steel liquid lithium cell,and 20% lighter than aluminium shell liquid lithium cell.3 ... PTC and fuse can be omited for cost reduce. Applications:Portable DVD, PDA , Cellular phone, notebook, earphone, bluetooth devices, MP3, ...