universal charger for USB

Universal charger for Guiding 3G life Direction for use: Direction for use of charger adust the pole terminal of charger so that it is consistent with the pole terminal of battery (positive and negative poles can be recognized automatically) pull apart the card socket to clamp the battery .if the length of battery is shorter than 13MM ,then rotate the card socket right wards . Direction for use of USB: use the data cable corresponding to the mobile phone to directly charge the battery of mobile phone. Use USB and charger simultaneously the charger will automatically determine by default that USB will take priority of charging ,now the indictor light is blue ,after USB charging is completed it will automatically switch to charge by the charger ,the indicator light is red. Automobile charging this product can cooperate with car charger so as to realize using in car.