1. Get an auxiliary battery
An auxiliary deep cycle battery provides an alternative energy source to use when your vehicle is off. Lights, a fridge... anything you need. Deep cycle batteries are designed for this type of constant-draw use (unlike your starter battery) and so last a lot longer to boot!
2. Get a DC to DC battery charger
The battery charger does exactly what the name suggests - charges your auxiliary battery! It takes charge from your alternator - but only while your engine is running. That means your starter battery (the one that starts your vehicle) won’t go flat from charging your auxiliary battery when the engine is off. Phew!
By getting a DC to DC charger with solar input, you can also charge up your auxiliary battery from your solar panels. How good is that! So whether you're driving or parked at a camp site, the DC to DC battery charger with solar input can charge up your auxiliary battery, giving you more power independence.
How many amps do I need in my battery charger? The amps determine how quickly you’ll be able to charge your auxiliary battery. A 40AMP charger will charge a battery twice as fast as a 20AMP charger.
What’s the difference between the Matson and Redarc brands? Redarc is made in Australia, for Australian conditions. Matson is a lesser known but reliable alternative that is made in China.
With a DC to DC charger and your portable solar panels, you can safely power up that aux battery from your engine or the sun.