Alternators can represent a significant source of power on board a boat. The problem that usually arises is that the output of the alternators decreases rapidly even if the batteries are still discharged.
This is because alternators are originally designed to service starting batteries that do not undergo deep discharge.
The purpose of boosted systems is touse all the power available from the alternator to recharge the service fleet by applying an appropriate charge cycle.
The alternator charger optimizes the charging of the service battery bank and also acts as a splitter (it has two outputs). It is connected like a distributor (it has two outputs). The alternator charger is compatible with all alternators on the market (except for vehicles equipped with regenerative brakes). The alternator charger is easy to install and is offered at a better price than the battery charger for an equivalent power.
The battery charger is connected in parallel to the engine battery (like a relay) and therefore does not require any modification of the charging circuit (the alternator is connected directly to the engine battery).
Alternator regulators work on the same principle as the original regulator but in an intelligent way in that they apply a charge cycle adapted to the service batteries. The external regulator takes into account the voltage of the service battery and controls the alternator's electromagnet (rotor) to reduce or increase the alternator's output power in order to obtain the right charge for the service battery.