... for Li-Ion 3.7V/7.4V battery. LCD display voltage ,time ,percentage ,capacity ,worse battery and ... batteryAuto active function for Lithium battery pack open LCD Universal Charger for Li-Ion 3.7V/ ... 7.4V batteryModel:M20-LCD Feature:Precision end-of-charge voltage detectionFloating- ... USB output or DC car cigarette lighter adaptor for charging, after power on, LCD display shows"Stby"characters, ...