🎉16th Renogy Day: Up to $1,000 OFF with 30-day price guarantee. Shop Now
renogy.com

Renogy 24/7 AI Agent | 6AM to 5PM PT Live Chat | Submit a Case Anytime Contact Us
Best Seller Products
ShadowFlux™ 120W/200W N-Type Anti-Shading Solar Panel
Best Seller
ShadowFlux™ 120W/200W N-Type Anti-Shading Solar Panel
25% Efficiency
Leading Anti-shading Tech
12V 300Ah LiFePO4 Battery w/ Low-Temperature Protection
New
12V 300Ah LiFePO4 Battery w/ Low-Temperature Protection
Max 4P4S, expandable to 61.44kWh
Low-Temperature Cut-Off
12V 30A/50A DC-DC On-Board Battery Charger with MPPT
Hot
12V 30A/50A DC-DC On-Board Battery Charger with MPPT
Dual Charging Solution
Versatile DIY Options
RV Solution (2.56kWh | 5.12kWh | 7.68kWh)
Best Seller
RV Solution (2.56kWh | 5.12kWh | 7.68kWh)
One-Stop RV Solution
Reliable and Efficient Power Anywhere
500A Battery Monitor With Shunt
500A Battery Monitor With Shunt
1% Accuracy Measurement
Fit for all battery
3000W/2000W/1000W/700W 12V Pure Sine Wave Inverter
Hot
3000W/2000W/1000W/700W 12V Pure Sine Wave Inverter
Remote-Controlled Switching
Delivers over 90% Efficiency
Popular Scenarios
RV
RV
For short trips or long expeditions
Tiny House
Tiny House
Solar pays your bills
Workshop
Workshop
Make DlY time more productive
Support
Warranty Registration Learning Center Calculator Special Group Discount New Customer Discount

12V 30A/50A DC-DC On-Board Battery Charger with MPPT

SKU: RBC50D1S-US
$307.99
+ Renogy Rays after purchase.
Log In Learn More
🎉16th Renogy Day: Enjoy up to 22% OFF — Auto-Applied at Checkout! 12% OFF - 50A (Only $271.04)
22% OFF - 50A w/Bluetooth (Only $253.50)
9% OFF - 50A w/Bluetooth & Renogy ONE Core (Only $323.05)
9% OFF - 30A (Only $170.17)
9% OFF - 30A w/Bluetooth (Only $195.65)
12% OFF - 30A w/Bluetooth & Renogy ONE Core (Only $352.00)
Ends In:
00 00
D
00 00
H
00 00
M
00 00
S
Key Features
  • Enhanced heat dissipation and safety.
  • Max solar panel input voltage upgraded to 30V/50V.
  • Versatile connections for DIY solar panel setups.
  • Optimized charging logic for efficiency boost.
  • Smart charging and monitoring with Renogy app.
  • *Please note: If your solar panel has an open-circuit voltage of 30V or higher, please select the 50A model (which accepts a maximum open-circuit voltage of 50V) and connect your solar panels in parallel.
Amp
Bundle Option
5% OFF Coupon for New Subscriber
50A battery charger is eligible for a 7-day unconditional return. Returns and exchanges are not accepted for non-quality issues after 7 days.
Lifetime Customer Support
Show More Benefits Show Less
Quantity：
Payment Methods
Delivery Methods
Delivery time: 1-3 business days.Shipping Policy
Request Bulk Purchase Prices
Request Bulk Purchase Prices
For Home use For Business Use
Description
Includes
Specs
Downloads
FAQ
Reviews

12V 50A DC-DC Dual Battery Charger

Renogy's enhanced DC-DC Dual Input Battery Charger now supports up to 50V solar input, enabling faster and more efficient house battery charging.

Intelligent Charging Mode Switching

Charge with advanced logic and 'Low Solar Cutoff Mode' for optimal performance in all weather conditions.

Versatile DIY Options

Enjoy greater customization with support for connecting solar modules in series, accommodating up to 50V solar input voltage, and expanding your DIY possibilities.

Adapt to Extreme Temperatures

Consistent high efficiency in extreme temperatures with precise battery temperature compensation.

NEG-terminal design for Easy Installation

The all-in-one NEG-terminal design consolidates connections for the solar panel array, starter battery, and house battery, optimizing installation space and simplifying setup.

Comprehensive System Protections

This battery charger offers advanced intelligent protections for batteries, solar panels, and the alternator, delivering a secure and efficient charging experience while safeguarding your system components.

Soft Start Circuit Design for Enhanced Battery Stability

The soft start circuit gradually increases the charger's input voltage, preventing sudden overvoltage and over-discharge.

Protect Your Solar Panels at Night

Reverse current protection prevents potential damage caused by reverse charging from the battery to the solar panels at night, ensuring system safety and reliable performance.

NOTES

  • Enhanced heat dissipation and safety.
  • Max solar panel input voltage upgraded to 30V/50V.
  • Versatile connections for DIY solar panel setups.
  • Optimized charging logic for efficiency boost.
  • Smart charging and monitoring with Renogy app.

If you have any questions regarding this product, please call us at 1 (909) 287-7111 or or submit a ticket for troubleshooting assistance.

Package Includes

12V 30A DC-DC Dual Battery Charger

x 1

12V 50A DC-DC Dual Battery Charger

x 1

Battery Temperature Sensor

x 1

Battery Voltage Sensor

x 1

IGN Signal Wire

x 1

12V 50A DC-DC ON-BOARD BATTERY CHARGER WITH MPPT

Electrical Parameters

System Voltage
12VDC
Battery voltage Range
9-16VDC
Maximum Charging Current
30A/50A
Battery Types
AGM/SLD , GEL ,FLD ,LI,USER
Charging Efficiency
94%
Max. Solar Input Voltage
30V/50V
Max. Solar Input Power
660W @ 50A
Alternator Input Voltage
Traditional Alternator: 13.2-16VDC ; Smart Alternator (Euro 6): 12-16VDC
Max. Alternator Input Power
660W @ 50A (50A)
Self-consumption
60mA
Input Fuse Rating
75A-100A
Output Fuse Rating
75A-100A
Temperature Compensation
-3mV / ℃ / 2V (Non-Lithium) ; 0mV / ℃ / 2V (Lithium)
Idle Power Consumption
＜30mA

GENERAL DATA

Terminal Size
M8 x 1.25 - 10mm
Terminal Range
8AWG-4AWG
Terminal SizeGround Type
Negative
Grounding
Common Ground
Communication Protocol
RS485
Operating Temperature Range
-31℉ to 149℉/-35℃ to 65℃
Storage Temperature Range
-40℉ to 176℉/-40℃ to 80℃
Operating / Storage Humidity
0%-95%, No Condensation
Dimensions
9.61 x 5.75 x 3.78 inch/244 x 146 x 96mm
Weight
4.10 lb (1.86 kg)

Certifications

Certifications
CE;ROHS;FCC Part 15 class B; ETL listed to UL 1741 & CSA C22.2

Warranty

Material and workmanship warranty
2 Year
Battery Chargers
DCCS Dual Input
Charge Controllers
DCCS Dual Input

Resources Download

Manual

Download

Warranty

Download

Fuse Installation

Download

Frequently Asked Questions

1. What type of alternator is this on-board battery charger compatible with?

This battery charger is compatible with both traditional and smart alternators. However, since standard/traditional alternator has a fixed voltage when charging, while smart alternator has a controlled charging output based on operating conditions, it is required to connect the charger to the smart alternator through the Vehicle Ignition Port by the IGN Signal Wire comes with the package.

2. What will happen if the service battery is fully charged?

This Renogy's DC to DC MPPT on-board Battery Charger has a built-in Voltage Sensitive Relay (VSR), thanks to which the charger will Trickle Charge the service battery and maintain its fully charged status, and will also Trickle Charge the starting battery via solar panels. The VSR also ensures reliable isolation between the starting battery and service battery, avoiding charging interference.

3. What types of battery does the charger support?

This dual battery charger supports Gel, AGM, Flooded, and Lithium battery, but please make sure to set the correct battery type once it is installed. For battery settings please refer to the Manual Book.

4. How do I set the battery since there is no display screen?

To change the battery type you will need to press the push button that is located on the PV+ and ALT+ side of the DCDC, then continue to press the button and the LED will display different colors with each representing a single type of battery. Please refer to the manual for Battery Type LED.

Reviews

Best Sellers

Recent Blogs

Have questions?
Chat with us.