The S-3822S is a portable charger that charges two V-mount batteries simultaneously, with LED indicators on the front panel showing each channel's charging status by colour. A 4-pin XLR female connector lets it double as an AC-DC adaptor -- with the optional SWIT S-7102 XLR cable, it outputs DC 15V, 6A, 90W, though the adapting output doesn't operate while batteries are charging.