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Renogy 12V 40A DC to DC Battery Charger

Renogy 12V 40A DC to DC Battery Charger

Regular price $189.99 AUD
Regular price $269.99 AUD Sale price $189.99 AUD
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The 40A DC to DC Battery Charger is the most effective way to charge your house/secondary batteries from the starter battery. Compatible with a multitude of alternator types, the DC-DC battery charger offers correct charging for AGM, Flooded, Gel, and even Lithium deep cycle batteries! Featuring a 3-stage battery charger and multiple electronic protections, users can feel confident that their batteries are being charged optimally and automatically. For additional safety, it isolates the input from the output preventing incorrect voltage transmission. Easily install the compact yet sturdy DC-DC battery charger on RV's, commercial vehicles, boats, yachts, and many more applications!

Empower Your Journey on the Go

Maximize charging efficiency on the go with enhanced versatility.

Compatible with Multiple Battery Types

The DC-DC battery charger is highly compatible with AGM, Flooded, Gel, and Lithium batteries, ensuring optimal performance for various battery types.

Protect Your Starter Battery

Renogy's DC-DC battery charger works seamlessly with traditional and smart alternators. The included D+ Ignition cable identifies generator starts, safeguarding the starting battery from over-discharge and protecting the generator. (Recommended: 18-16AWG copper cable. D+ Ignition Cable not included.)

Smart Charging Protection

The DC-DC battery charger's LC wire automatically adjusts the charging current, safeguarding the house battery from potential damage due to excessive charging. (Recommended: 18-16AWG copper cable. LC cable not included.)

Smart 3-Stage Charging

Efficiently charge your house batteries from the starter battery with Bulk, Boost, and Float stages, ensuring automatic and optimal charging up to 100%.

Prolong Battery Lifespan

Automatically adapts charging modes to match battery voltages, while the temperature sensor provides -3mV/°C/2V compensation, ensuring optimal charging in varying temperatures. (Please note: Temperature sensor not included, not compatible with Lithium batteries.)


Nominal Voltage: 12V

Rated Charge Current: 40A

Output: 500W

Idle Power Consumption: <0.4A

Input Voltage Range: 8V-16V

Equalization Voltage: N/A

Float Voltage: 13.2-13.8v

Boost Voltage: 14.1-14.7v

Operating Temperature: -20°C to +50°C

Dimensions: 10.28 x 6.88 x 2.68 inches / 26.1 x 17.5 x 6.8 cm

Weight: 4.14lbs / 1.88kg

Certifications: CE, ROHS


The First Option: battery charger x1

The Second Option: battery charger x1 and temperature sensor x1

The Third Option: battery charger x1 and 2000w inverter x 1


Warranty Period: 1-year


User Manual

Warranty Information


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