The TrueCharge2 unit offers low electrical interferences and efficient, microprocessor controlled, multi-stage charging with settings for flooded, gel, AGM, or lead-calcium batteries. Drip-proof unit is certified for ignition protection so it can be mounted virtually anywhere, even in a gasoline engine compartment. Reverse polarity over/under temperature protected for peace of mind. Handles input voltage range from 90-265V AC, 47-63 Hz, so it's compatible with a generator, poor quality power, or foreign travel. Built-in battery equalization feature. Optional remote panel available for chargers over 10 amps.