the IDX VL-4X V-Mount 4-Channel Dual Sequential Charger upports lithium-ion V-mount batteries and features sequential charging for four batteries, automatically switching to the second battery after fully charging the first, and it features simultaneous charging for two batteries when on opposite sides. It delivers up to 2.7A of quick-charge current without the noise of a typical charger thanks to a fanless design. This portable desktop charger 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. It features a support stand to keep the charger upright on a flat surface.