SecurityIng US LCD Display Charger for 3.7V 26650 / 18650 / 16340 Li-ion Battery, 1.2V AA / AAA / C Ni-MH Battery, 3.2V 26650 / 18650 / 16340 LiFePO4 Battery (US PlUG) Automatic 3.7V / 1.2V voltage and polarity detection. Over Charging timeout protection. Auto alert indication for worse battery cell and bad battery cell. LCD displays multi-information, battery type, voltage, time, charging percentage, charging capacity, worse battery and bad battery. LCD display, it will automatically power off after 30 seconds to save electricity. Mix charge the battery, reverse protection, precision end-of-charge voltage detection. Auto active function for Lithium battery cell open (0 Voltage). Each cell can be installed different battery to charge and has a separate LCD display charging parameters. Each battery can be charged simultaneously or independently. With a dedicated power adapter, a convenient car charge adapter(DC 12V) and a mini USB cable(DC 5V) to charge, safe and portable, a good helper for home or travel.