... the model without lithium battery can be fit for mp3/mp4/mp5 player,radios,portable CD/MP3 player,mobile phone solar ... lithium battery,it can be fit for audio player,PDA, MP4 player,radios,portable CD/MP3 players, Digital cameras) solar charger ... new style cell phones which with USB connect-line. Solar panel input: power:0.55w, voltage:5.5v,current:100mA Charger ...