![]() ![]() Because, for all the things a computer in a smart alternator vehicle knows, it does not consider the secondary battery's state of charge, type, or location in the car in its calculations.ĭC to DC Battery Charges - A DC/DC charger protects the start battery as an isolator does, but charging it boosts the charge to the auxiliary battery. Widespread implementation of smart alternators means that the one trusty process of parallel charging from the start battery to the secondary battery is ineffective in vehicles equipped with this technology. It will render it unsuccessful at charging a secondary battery to an unusable level when the secondary battery will pair with the start battery in the traditional way. Which is to reduce the electrical load and the mechanical load on the engine, contributing to better fuel economy. ![]() Such is when the vehicle's engine computer sends a signal to the smart alternator telling it only to produce enough charge to cover the calculated load. ![]() The smart alternator technology adjusts its output voltage based on the vehicle operating conditions and electrical load. The fixed-voltage alternator produces sufficient voltage to charge a secondary battery successfully. There are two common types of alternators, the traditional fixed-voltage alternator and now the most common smart alternator, which can fit most vehicles built after 2011. What is an Alternator - The alternator is the power supply used by the vehicle to recover its start battery from the engine starting process and provides power to its electrical consumers running. ![]()
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