DC charging systems
Direct Current (DC) That's what a battery provides - DC Power. DC chargers use battery power to recharge other batteries. Examples of this would be using a start battery to charge a house/service battery. Or more specifically the vehicle's alternator which charges the start battery, but then the DC charger amplifies the voltage to provide the correct voltage to the house battery which might also be a different type of battery to the start battery. For instance, a start battery that a wet cell can happily charge at 13.5 volts but a much larger house battery that's an AGM technology might require 14.7v for a much longer period than what an alternator will maintain a steady 13.5 volts for.
That is why we need DC charging systems or DC to DC chargers these days with modern vehicles because a vehicle's alternator doesn't operate as it used to 20 years ago and it's even more important with Euro 5 & Euro 6 vehicles.
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The Battery Chemistry Module is used with multi-output chargers to convert one of the outputs to a different charging profile and/or a different voltage. This allows a 3 output 12v charger which is set to AGM charge profile for starting or house batteries to also charge (on the 3rd output) wet cell bow thruster batteries and/or charge them at 24v if they are connected in series.
This is very handy when you have already purchased a large substantial mains powered charger and you are looking for a single power source and a one-brand solution that is always active and customisable.
Technical Information:
Input: 12V
Output: 12V
Current: 60A Max