Renogy 12V 20A DC to DC Battery Charger

SKU: RNG-DCC1212-20 Learn More»
Renogy 12V 20A DC to DC Battery Charger
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Product Description

Renogy 12V 20A DC to DC Battery Charger, 1 Year Warranty. The 20A 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! 


  • 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.)


SKU RNG-DCC1212-20

Brand Renogy

GTIN 00810009712459

Warranty Period: 1 Year

Product Category Battery Chargers

Output Current Rating (Amps) 20

Dimensions 211 x 175 x 68 mm

Charger Voltage 12V

Operating temperature range -20°C-50°C

Weight (kg) 1.33


12V DC to DC On-Board Battery Charger


Product Q&A

Ask Us a Question
  • Can I change the amp output of the charger?

    No, the amp output can not be changed. You will need to confirm that the charger you purchase will not produce more than your battery max input

  • Will this charger work with solar input as well?

    No, this is a dedicated DC to DC charger. Renogy to have a range of dual input chargers that have an inbuilt MPPT charge controller

  • What is the purpose of a DC to Dc Charger?

    Installed between the house battery and the starter battery is the DC-DC battery charger. It takes energy from the start battery in the vehicle and adjusts the voltage to match the requirements of the device being charged ie house battery

  • How can I pick a battery charger that works well?

    1. Verify that the system is running on 12 volts throughout.

    2. Make sure that the DC-DC battery charger's maximum charging current does not surpass the maximum charging current that the house battery permits.

  • How can I adjust the charger to charge different chemical batteries?

    The DIP switch concept is included into the DC-DC battery charger. There are 5 dip switches that need setting based on the profile of the battery. Please refer to the manual for the correct setting for each profile. 

  • Do I need to connect the included D+ ignition cable?

    The D+ igntion cable is necessary to install as the Dc-Dc charger will not power on until it detects the 12v source from the vehicles alternator. This is also to prevent the Dc-Dc chargerfrom drain the start battery when the vehicle is not running. 


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