Dual battery systems & DC-DC charging
If you’re running a fridge, camp lighting, a winch or accessories off your 4WD and don’t want to risk your starting battery, a properly set up dual battery system with DC-DC charging is the fix.
Signs you need this
- Worried about running the starting battery flat with accessories
- Fridge or accessory battery isn’t charging properly while driving
- Existing dual battery setup was installed cheaply and isn’t working right
- Planning a trip and want reliable off-grid power
- Current system doesn’t isolate the starting battery properly
What we do
We size the system to what you’re actually running — fridge, lighting, winch, or all three — and fit a DC-DC charger rather than a basic isolator where the vehicle has smart alternator charging, since older isolator-only setups often don’t charge properly on modern vehicles. Wiring is run and secured properly, not just zip-tied under a seat.
What it costs
Cost depends on the components chosen and how much you’re running. We’ll talk through what you actually need before estimating — no point selling you more than the trip requires.
What we work on
4WDs and utes · Caravans and camper setups
Questions
- Do I need a DC-DC charger or will a basic isolator do?
- Depends on your vehicle’s alternator. Many modern vehicles use smart charging that a basic isolator doesn’t charge properly from — we’ll check yours.
- Can you upsize an existing setup?
- Yes, we can assess what’s there and upgrade it.
- What can I run off a dual battery setup?
- Depends on battery size and how it’s charged — we’ll size it to your actual gear.