Renogy

40-Amp DC-to-DC Battery Charger with MPPT

SKU: RGY-RBC40D1S-G1-US
$199.95
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Renogy 40A 12V DC-to-DC Battery Charger with MPPT – Dual-Source Charging, Simplified

Drive. Park. Charge. Repeat.

The Renogy 40A DC-to-DC Battery Charger with MPPT is your all-in-one charging solution for keeping your house batteries topped off—whether you're on the move or off-grid. Designed for campervans, RVs, and adventure rigs, this charger automatically switches between your alternator while driving and solar panels when parked.

With a built-in Maximum Power Point Tracking (MPPT) solar charge controller, it efficiently captures every drop of solar energy, delivering up to 99% tracking efficiency. Plus, a simple SELECT button lets you prioritize solar charging, putting you in full control of your system.

 


 

Key Features:

  • Dual Charging Sources – Switches automatically between vehicle alternator and solar power

  • Built-In MPPT Controller – Up to 99% efficiency for optimal solar charging

  • Smart Charging Prioritization – Use the SELECT button to prioritize solar when parked

  • Perfect for Vanlife & Off-Grid – Reliable power for Sprinter, Transit, and ProMaster builds

  • Comprehensive Safety – Built-in protections: Over-voltage, reverse polarity, over-temp, and more

  • Compatible with All Major Battery Types – Supports Lithium (LiFePO4), AGM, Gel, and Flooded

 


 

Specifications:

  • Alternator Input Voltage: 8V–16V DC

  • Solar Input Voltage: Up to 25V

  • Max Charging Current: 40A

  • Output Voltage Range: 13.2V–14.7V (Battery type selectable)

  • Efficiency: Up to 94% (DC), 99% (MPPT solar)

  • Dimensions: 8.3 x 5.9 x 2.8 in

  • Weight: 4.4 lbs

  • Cooling: Intelligent fan-based system

 


 

What’s Included:

  • [1] Renogy 40A DC-DC MPPT Charger

  • [1] User Manual

  • [1] Mounting Hardware Kit

 


 

Ideal For:

  • Van Conversions

  • Off-Grid Campers

  • Weekend Overlanding

  • RV Electrical Systems

 


 

✔ FREE Shipping to Lower 48 States
✔ 2-Year Manufacturer Warranty

 

Stay powered in motion or at rest—upgrade to the Renogy 40A DC-to-DC MPPT Charger for dependable, efficient energy wherever your van takes you.

Available in these skus:

PDF - Specifications:
RBC40D1S-G1_QUICKGUIDE.pdf
PDF - User Manual:
Renogy 40a dcdc user manual v1.0 20240320.pdf

About Renogy