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New Renogy DC To DC Charger Makes Dual Batteries A Snap

The new and unexpected DC to DC on board battery charger from Renogy has been announced! This unit will be available as a 20 or 40 amp DC charger (I suspect we’ll see a 60 amp version as well) for charging your secondary or auxiliary batteries while driving.

Click here to check pricing on Amazon for 20 Amp version

Click here to check pricing on Amazon for 40 Amp version

renogy dc to dc charger on board continue crushing overland

The Renogy DC to DC charger is capable of charging almost any battery type used on vehicles, included Flooded, Gel, AGM, And Lithium. This is pretty exciting as the price point that this comes in at virtually eliminates any reason to go with a “cheap” isolator since this is so affordable. It supports 3 stage charging (bulk, boost, and float) which will ensure your battery is properly charged on the road.

renogy dc to dc charger continue crushing overland flooded gel agm lithium

This should be considered the new “low cost” dual battery charger set up that you should be running. Although 20 and 40 amps might seem “low” compared to other systems out there, this should be seen as a positive. Since the amperage is low, you can use 10 gauge wire (at least for the 20 amp version) which is affordable and easy to run/hide in your overland rig. Of course your installation may vary, but don’t forget that bigger is better when it comes to wiring.

renogy dc to dc charger continue crushing overland protection
It also features built in protection so you don’t burn down your rig.

Below is the charging algorithm that Renogy uses.renogy dc to dc charger on board continue crushing overland charging diagram

The simple to use and easy to set dip switches are located on the unit to make sure it’s set up properly regardless of which battery system you have.

renogy dc to dc charger continue crushing overland dip switch settings

Unit specs:

Renogy 20A DC to DC Battery Charger Renogy 40A DC to DC Battery Charger
Nominal Voltage: 12V Nominal Voltage: 12V
Rated Charge Current: 20A Rated Charge Current: 40A
Output: 250W Output: 500W
Idle Power Consumption: <0.4A Idle Power Consumption: <0.4A
Input Voltage Range: 8V-16V Input Voltage Range: 8V-16V
Equalization Voltage: N/A Equalization Voltage: N/A
Float Voltage: 13.2-13.8v Float Voltage: 13.2-13.8v
Boost Voltage: 14.1-14.7v Boost Voltage: 14.1-14.7v
Operating Temperature: -20°C to +50°C Operating Temperature: -20°C to +50°C
Dimensions: 8.31 x 6.89 x 2.68 inches Dimensions: 10.28 x 6.88 x 2.68 inches
Weight: 2.93lbs Weight: 4.14lbs

More info on setting dip switches for different battery types and voltages

renogy dc to dc charger continue crushing overland dip switch setting charged voltage

renogy dc to dc charger continue crushing overland dip switch setting float voltage

renogy dc to dc charger continue crushing overland dip switch setting lithium

Find the user manual HERE

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