The Guest models 16153 and 16202 are microprocessor controlled, 3-stage electronic switching battery chargers. Each output produces 12 Volts DC at either a full 6 Amps or 10 Amps (model specific), while using much less AC current than other chargers. Pre-wired on the AC input and DC outputs, these units feature a push button interface that allows the user to configure individual outputs for different battery chemistry types. One tri-color LED per output will indicate which battery chemistry type has been selected. Tri-color LED readout indicates state of charge for each bank. Unlike automotive “trickle” chargers, the 16061, 16102, 16153, 16202 will not boil off the electrolytes in properly installed and maintained batteries. When the charger is connected to your batteries and plugged into a standard 115 Volt / 60 Hz AC outlet, the tri-color LED (red, blue, green) mounted on the face of the charger will let you know the unit is recharging and maintaining your batteries. This sophisticated device is ideal for recharging and maintaining the 12VDC batteries in your boat, electric vehicle, ATV, snowmobile and motorcycle.