DC-DC Chargers & Dual Battery Setups
Charge your auxiliary battery while you drive, with the right charger, fuses and cable for your vehicle.
Guides
DC-DC Chargers & Dual Battery Setups
What Size DC-DC Charger Do I Need? 20A vs 25A vs 40A
Match your DC-DC charger to your battery size, alternator and cable run, with tips for smart alternators and solar input.
Read guide →
DC-DC Chargers & Dual Battery Setups
Dual Battery Wiring Diagram for a 4WD (Easy DIY)
A simple dual battery layout with a DC-DC charger, fuses and earths, plus the parts list to build it.
Read guide →Gear picks
Twin-core battery cable
- Sized for your charger and run length
- Auto-grade insulation
12V fuse box with blade fuses
- Feeds fridge, lights and USB
- Fed from the auxiliary battery
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