... High-quality Lithium-Ion cell♦Applicable to: iPhone, iPad, other brand mobile phone, camera, MP3, MP4, DV, PSP ect digital device♦Auto Protection function ... 0°C~40°C(32°F~104°F)Discharge temperature -20°C~60°C°(-4°F~140°F)Optimal storage temperature -20°C~35°C(- ... remaining power, When charging the charger, screen show the amount of electricity.♦Charge the charger (charging):Using the attached USB cable ...