40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER
40A DC to DC CHARGER

40A DC to DC CHARGER

$399.00 $429.00

TAX INCLUDED

High-Output Charging for Serious Setups. The VoltMaster 40A DC to DC Charger is the powerhouse your dual-battery system deserves. Delivering a massive 40A of smart-charging current, it’s engineered to replenish large battery banks in record time. Whether you’re running a massive 12V fridge, power-hungry lights, or a full canopy setup, the VoltMaster 40A ensures you never wake up to a flat auxiliary battery.


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The Ultimate Dual-Input Powerhouse.
When a standard 20A charger just won't cut it, the VoltMaster 40A steps up. Designed for high-capacity AGM and Lithium (LiFePO4) setups, this charger utilises advanced simultaneous dual-charging technology. This means it can pull power from your vehicle's alternator and your solar panels at the same time, maximizing every minute of sunshine and driving time.

Equipped with a high-efficiency built-in MPPT controller, it boosts solar harvesting by up to 30%. The rugged, vibration-resistant aluminum housing is built for the corrugated tracks of the Outback, while the smart 4-stage charging profile ensures your batteries are topped up safely and their lifespan is extended. From "waking up" dead lithium batteries to managing modern smart alternators, the VoltMaster 40A is the smartest investment for your off-road power grid.

  • 1 x VoltMaster 40A DC to DC Charger (with heavy-duty Anderson-style plugs)
  • 1 x Instruction & Installation Manual
  • Integrated Temperature Sensor Cable
  • Ignition Wire (for Smart Alternator compatibility)
  • Rated Output Current: 40A
  • DC Input Voltage Range: 12.5V – 16.0V
  • Solar Input Voltage Range: 13.0V – 25.0V
  • Max Output Power: 600W
  • Battery Compatibility: LiFePO4, AGM, Gel, Calcium, Lead Acid
  • Charging Profile: Smart 4-Stage (Bulk, Absorption, Float, Maintain)
  • MPPT Efficiency: Up to 99%
  • Standby Current: <10mA
  • IP Rating: IP67 (Fully sealed against dust and water)
  • Operating Temperature: -20°C to +80°C
  • Weight: 1.55kg
  • Dimensions: 188mm x 127mm x 39mm

This item is classified as a general shipping item. Shipping is calculated at checkout and delivered to your door via our preferred carrier.

Location & Pickup:
Orders are dispatched from our warehouse at 2/14 Thomas Hanlon Court, Yatala, QLD 4207. Local pickup is available. Select “Pickup” at checkout.

Dispatch Time:
Orders are typically dispatched within 1–3 business days. You’ll receive tracking details and delivery contact information from the carrier.

Delivery Times (Australia)

  • Metro Areas: Standard 2–5 business days
  • Western Australia & Northern Territory: 6-12 business days

International Shipping: This item cannot be shipped internationally.

Built Tough
for the Bush
& Beyond

Tested in the Wild, Trusted by Thousands

40A DC to DC CHARGER

High-Output Charging for Serious Setups. The VoltMaster 40A DC to DC Charger is the powerhouse your dual-battery system deserves. Delivering a massive 40A of smart-charging current, it’s engineered to replenish large battery banks in record time. Whether you’re running a massive 12V fridge, power-hungry lights, or a full canopy setup, the VoltMaster 40A ensures you never wake up to a flat auxiliary battery.


Tested in the wild. Trusted by thousands.

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