Battery Systems

When to use a dual battery system? A dual battery system is recommended when needing to run powerful accessories such as a fridge or inverter when the engine is turned off. For example, let's consider a 12 volt compressor fridge in the back of a four wheel drive. W But what happens when the car is turned off? The fridge will continue to run from the car battery. If left running for long enough, the car battery will run flat and may not be able to restart the car. By installing a dual battery and an electronic isolator, the batteries can now be powered independent of the starting battery but charged when the engine is running. T Let'see how it works. Here is the same example as before, but it is now fitted with a projected dual battery isolator and an auxiliary battery. Notice that the main starting battery is nearly full when the car starts, the alternator will begin charging the starting battery. The isolator prioritizes charging to the starting battery before it starts to charge the auxiliary battery. Once the starting battery is full, the isolator will then allow power to flow to the auxiliary battery. Now let's turn on the fridge. With the engine no longer running, the fridge can continue to run and keep your food and drink cool without using any power from your starting battery. But having a second battery is not just about running your accessories. It can also be used to j In t By pressing the override button on the isolator, it will manually connect the two batteries together in a j The two batteries will equalize in charge, allowing the engine to start. The engine will then recharge the main battery. The isolator will automatically detect the engine running and will return back into automatic mode.