The UltraFire 3.0/3.6V battery charger can charge 2 PCS 3.0V batteries or 2 PCS 3.6V batteries or 1 piece 3.0V and 1 piece 3.6V battery. The charger has two separate charger channels and is auto-off as batteries are fully charged. With the charger you can save a lot of money and make a great contribution to the environment. This is a necessary battery charger for your devices using the 3.0V / 3.7V battery. Charge both 3.0V & 3.6V batteries Auto-off when batteries are fully charged (1 to 2 hours) Independent charging channels Charge one or two batteries at a time 110/220V auto switch AC power