What is a dual battery system?

A dual battery system involves the use of a second battery in addition to the vehicle’s starter battery. The second battery, also known as the house battery or secondary battery, is used to power auxiliary gear and accessories, such as a winch, portable fridge, camp lights, radio, or USB outlets.

What is the difference between a starter battery and a dual battery?

The main starter battery is responsible for starting the engine and powering the vehicle’s essential electrical systems when the engine is running. The secondary battery (often referred to as the Dual Battery) is used to power non-essential electrical systems when the engine is off, such as a fridge, lights, or a camping gear.

Where is a dual battery located?

A dual battery can be located in an engine bay, in a vehicle cabin or in a load space, as pictured in this Amarok. (Image credit: Jarryd Sullivan). A dual battery setup involves more than just installing a second battery though. The two batteries – your vehicle’s starting battery and your auxiliary battery – are two separate, isolated systems.

What is a dual battery system in a 4WD (four-wheel drive) setup?

A dual battery system in a 4WD (four-wheel drive) setup is designed to provide additional power for various electrical accessories and equipment while ensuring the vehicle’s main starting battery is always capable of starting the engine.

Do I need a dual battery system?

Whether you need a dual battery system depends on your power usage. If you often use your vehicle for activities requiring additional power—like camping, using power tools, or running heavy electronics—a dual battery system can ensure you have power without straining your main battery. How Long Will a Dual Battery Last?

How do I set up a dual battery system?

To set up a dual battery system in a vehicle, you will need a second battery, battery box or tray, battery isolator, cables, and connectors. The battery box or tray should be specifically designed to hold the battery securely in place.