The Calumet Dual Port V-mount Li-ion Battery Charger is a sequential quick charger that will fully charge two lithium batteries in approximately 4 hours. It automatically searches each channel in a continuous loop for detection of a valid battery, then toggles back-and-forth until the batteries are fully charged. The LCD display shows the charging status including battery voltage and power level. A built-in safety circuit provides protection to both the charger and batteries from serious damage.The charger is also equipped with an XLR 4-pin female socket which allows it to be used as a 12V DC power adapter to power other portable devices. A 10.5’ (3.2m) cable is included.