iTECHDCDC40 12V/24V 40A DCDC & MPPT Battery Charger

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  • MPPT Solar Controller
  • Suited for Under-Bonnet Installation
  • IP67 Water & Dust Proof
  • Charge All Battery Types

iTECHDCDC40 40A 12/24V In-Vehicle DC to DC Charger

DCDC Charger Product Information

The iTECHDCDC40 keeps your battery charged no matter the battery type or size. 

The iTECHDCDC40 charger incorporates an MPPT solar controller allowing charge from solar panels or blankets. When the vehicle runs, the DCDC charger will charge via the alternator; when the vehicle stops, the iTECHDCDC40 will continue charging via your solar panels/blankets (if added).

Exclusive to iTechworld DCDC chargers is a function known as Solar Power Priority (SPP) which represents the preference for solar input. This allows you to set your iTECHDCDC40 to use solar input over the vehicle alternator's input at the push of a button. Solar Power Priority places less load on the alternator, is better for the environment and helps to reduce fuel consumption.

Designed and developed in Australia for Australia, the iTECHDCDC40 is IP67 Waterproof, Dustproof and vibration-proof. Built with a heavy-duty metal case uniquely designed to help with heat dispersion, the iTECHDCDC40 is suited and warranted for under-bonnet installation. Mounting brackets are included in the case design, allowing for easy installation in your setup.  

Many vehicles now have smart alternators that do not produce a high enough voltage to charge auxiliary batteries; the iTECHDCDC40 works by enhancing the voltage to the auxiliary battery regardless of the alternator type; the enhancement of voltage is also valuable for overcoming voltage drop from long cable runs to caravans and camper trailers. 

If your car has a smart alternator, the iTECHDCDC40 has you covered with its easy-to-connect 3-pin Anderson, which allows operation with any alternator.

A unique feature of the new iTECHDCDC40 is the ability to accept a wide voltage input range from either solar or vehicle input, with the maximum input voltage now being 32v. As the iTECHDCDC40 accepts higher input voltages, it opens the door to 24v inputs as well as some larger voltage solar panels commonly found in residential installations. 

The new iTECHDCDC40 is compatible with all battery types but comes into its own when paired with iTechworld lithium batteries. All iTechworld lithium batteries have low voltage protection and will enter "safe mode" to protect themselves when their voltage dips below 10v. There are various methods to bring an iTechworld lithium battery out of safe mode, but the new iTECHDCDC40 will get an iTechworld lithium battery out of safe mode automatically; if the lithium battery enters safe mode, turn off any load on the battery and the iTECHDCDC40 will take care of the rest, it's that simple.


  • IP67 Waterproof and dustproof
  • Suited and warranted for under-bonnet installation
  • Colour-coded Anderson plugs for easy install
  • Separate DC and solar charging inputs
  • Maximise the performance and life of your auxiliary battery
  • Vibration proof 
  • Solar Power Priority mode
  • Sleek heavy-duty new design
  • Heat dispersing design
  • Lithium battery wake-up function
  • Charge all battery types, including Lithium LiFePO4, Lead Acid, Gel, AGM, and Calcium.
  • Updated custom-made lithium charging algorithm
  • Mounting brackets

Package Contents

  • 1x iTECHDCDC40
  • 6x Colour coded Anderson plugs (3 are pre-installed to the iTECHDCDC40)
  • 1x Instruction manual also found HERE


Input voltage 9V - 32V
Output voltage 12v
Solar input voltage:  9V - 32V
Maximum input current: 45A
Maximum output current:  40A
Standby current:  <10mA
Suitable battery types:  Lithium LiFePO4, Lead Acid, Gel, AGM, and Calcium.
Operating temperature:  -20°C - +80°C 
IP rating: IP67 Waterproof
Weight: 950g
Dimensions:  188x127x39mm (LxWxH)