The Gen Energy 2-Channel V-Mount Lithium-Ion Battery Charger simultaneously charges two V-mount batteries. It also features a 16.2 VDC 4-pin XLR power output that is active while charging. This portable desktop charger features a customized internal board and charging program to provide smooth operation. It is designed with reliable internal safety features that protect both the battery and charger from damage should faulty or misused batteries be placed on the charger. It will automatically stop charging if any attached battery reaches an overvoltage condition.