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February 7, 2020

40 Amp 24 volt to 12 volt DC/DC Converters

800 Watt DC/DC 24 to 13.8 volt converter

This page: high power 24 volt to 12 volt DC/DC converters at low cost. 540 watts continuous.

These are fully regulated switching power converters (switchmode), designed to allow the use of 12 volt equipment in 24 volt vehicles. These are attractive, reliable, robust DC/DC converters good for fork lifts, off-road, construction and recreational equipment. This has "forced air cooling" and should be protected from water, spray, and dust that could be sucked into the power supply.
24 volt to 12VDC heavy duty DC/DC converters 5 Amp
More Heavy Duty, Consumer, Industrial, and Military Grade converters with 24VDC input

To determine the amperage you need just add up the watts of all the equipment and divide by 13.8 volts.

This has common ground, meaning that the input and output negative terminals are grounded together. This is applicable to most 12V requirements.
DC-DC Converters 80 Amp Peak
DC to DC Converter
Part Number
and Price
Quantity 1-10 $240.75
11-100 $221.50
Continuous Current 40 Amps
Peak Current 80 Amps
Input Voltage 20 to 28 VDC
Max Input current at No Load 100 mA
Output Voltage 13.8 ± 0.1 VDC
Output Adjustment 12.5-15.5V with internal trimpot VR1
Max Output Current(s) 80 A (milliseconds)
Max Output Power (continuous) 550 Watts
(40 Amps)
Max Output Power (milliseconds) 1100 Watts
Output current limit? No
Output Plug Type Banana plug + screw terminal standard, others on request
Efficiency 85 %
Line Regulation ±14 mV
Load Regulation ±27 mV
Switching frequency 25 kHz
Output ripple noise 50 mV rms
Remote power on/off Yes
Protection Over Voltage , Over Current, Reverse Polarity , Over Load. NO SHORT CIRCUIT PROTECTION.
Connections M4 Screw terminals
Dimensions 200 x 310 x 70 (7 7/8 x 12 3/16 x 2 3/4 inches)
Drawings Click Here for Drawing
Weight 2.5 Kg (5.5 lbs)
 Isolation  Common negative ground
Temperature 0 to 40°C, 25 degree rise above ambient at continuous full power
Additional Features Forced Air cooling


Inexpensive High Current Switchmode DC/DC Converters.

High efficiency.

Excellent line and load regulation.

Wide input voltage range.

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