Safetex 12V DC to DC Battery Charger 40A

Safetex 12V DC to DC Battery Charger 40A

Name: Safetex 12V DC to DC Battery Charger 40A
Brand: Safetex
SKU: ST-DCDX40A
Price: 239.34 AUD
Availability: OutOfStock

Safetex 12V DC to DC Battery Charger 40A

$239.34

The Safetex ST-DCDX40A is a high-efficiency 40-amp DC-to-DC in-vehicle battery charger designed to intelligently charge your auxiliary or house battery directly from your vehicle's alternator while on the move. Delivering a full 40A charge output, it uses a multi-stage charging algorithm that properly conditions AGM, GEL, flooded lead-acid, and lithium LiFePO4 battery chemistries — protecting your investment and maximising battery life. Unlike a basic VSR (voltage-sensitive relay), this DC-DC charger actively boosts voltage to deliver a true multi-stage charge profile, ensuring your second battery receives a full, healthy charge regardless of engine load or cable run distance.

Built for Australian caravanners, 4WD tourers, and RV travellers who demand reliable power on the road, the ST-DCDX40A is ideal for charging house batteries in caravans, camper trailers, motorhomes, and dual-battery setups in 4WD vehicles. Whether you're running a 12V fridge, lighting, water pump, or inverter off-grid across the outback, this charger keeps your auxiliary power bank full during transit so camp is powered up the moment you arrive. Its compact, fan-cooled housing is designed for easy mounting in tight engine bays or underbody locations, making it a practical upgrade for any serious touring setup.

Key Features

40A output current for fast, efficient auxiliary battery charging while driving
Compatible with AGM, GEL, flooded lead-acid, and lithium LiFePO4 battery types
Multi-stage charging algorithm (bulk, absorption, float) for optimal battery health
Integrated MPPT solar input for combined alternator and solar panel charging
Compact fan-cooled design with LED status indicators for easy monitoring

Features

+

40A continuous DC output charge current for rapid auxiliary battery charging on the move
Multi-stage charging profile: bulk, absorption, and float stages for all battery types
Compatible with AGM, GEL, flooded lead-acid (wet cell), and lithium LiFePO4 batteries
Integrated MPPT solar input allows simultaneous alternator and solar panel charging
Wide input voltage range accommodates varying alternator output voltages across 12V vehicles
Automatic battery type detection and selectable charging profiles via front-panel switch
Built-in temperature compensation sensor protects batteries in extreme Australian heat and cold
LED status indicators for charge stage, fault, and solar input at a glance
Reverse polarity and over-temperature protection safeguards the unit and your batteries
Compact, fan-cooled aluminium housing suitable for mounting in engine bays or enclosed spaces

Specifications

+

Model	ST-DCDX40A
Brand	Safetex
Input Voltage (DC)	12V DC (alternator / starter battery)
Output Voltage	12V DC regulated
Output Current	40A continuous
Solar MPPT Input	Yes — integrated MPPT solar input
Compatible Battery Types	AGM, GEL, Flooded (wet cell), Lithium LiFePO4
Charging Stages	Multi-stage: Bulk, Absorption, Float
Input Voltage Range	10V – 16V DC
Efficiency	≥ 90% (typical)
Protection Features	Reverse polarity, over-temperature, over-voltage, short-circuit
Cooling Method	Thermostatically controlled fan
Indicators	LED status indicators (charge stage, solar, fault)
Operating Temperature	-10°C to +55°C
Housing	Compact aluminium alloy, surface-mount

Shipping & Returns

+

Shipping

Outdoor Camping Australia operates a nationwide distribution network, with items shipping from:

Our warehouse in Bendigo, Victoria
Partner supplier warehouses on the East Coast
Partner supplier warehouses on the West Coast

This multi-location approach allows us to provide efficient delivery across Australia. Use our shipping calculator on the product pages for accurate delivery times and costs to your location.

Important Shipping Notes:

We cannot deliver to PO Boxes, Private Mail Bags or Parcel Lockers
Depot pickup options may be available at reduced rates (contact us to discuss)
Off-mainland deliveries require additional shipping fees (custom quoted)
Missed deliveries may incur a redelivery fee set by the courier
All shipments managed through our trusted delivery partners including Border Express, VicTas, DHL, StarTrack, AusPost, Sendle and Aramex

Returns

As outlined in our Refund Policy, we follow the Australian Consumer Law (ACL) which protects consumers by providing certain guaranteed rights when buying goods and services.

You can return items if: