What Is an MPPT Solar Charge Controller? How It Works and How to Choose One
Learn what an MPPT solar charge controller does, when it is worth choosing, how to size one, and how to match a Renogy MPPT controller to your system.
Loading...
12V 30A/50A DC-DC On-Board Battery Charger with MPPT
SKU:
RBC50D1S-US
$307.99
Unit price
/
Unavailable
+
+
Rays
after purchase.
Log In
About Renogy Membership
⚡New Off-Grid Upgrades Deal: Enjoy up to 22% OFF — Add to cart to see your final price!
22% OFF - 50A (Only $239.99)
9% OFF - 50A w/Bluetooth (Only $295.75)
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)
9% OFF - 50A w/Bluetooth (Only $295.75)
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.
12V 30A/50A DC-DC On-Board Battery Charger with MPPT - 50A / Battery Charger Only is backordered and will ship as soon as it is back in stock.
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
Payment Methods
Request Bulk Purchase Prices
12V 30A/50A DC-DC On-Board Battery Charger with MPPT
$307.99
Unit price
/
Unavailable
50A | Battery Charger Only
Description
Includes
Specs
Downloads
FAQ
Reviews
12V 50A DC-DC Dual Battery Charger
Intelligent Charging Mode Switching
Versatile DIY Options
Adapt to Extreme Temperatures
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
Soft Start Circuit Design for Enhanced Battery Stability
Protect Your Solar Panels at Night
NOTES
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
Frequently Asked Questions
1. What type of alternator is this on-board battery charger compatible with?
1. What type of alternator is this on-board battery charger compatible with?
2. What will happen if the service battery is fully charged?
2. What will happen if the service battery is fully charged?
3. What types of battery does the charger support?
3. What types of battery does the charger support?
4. How do I set the battery since there is no display screen?
4. How do I set the battery since there is no display screen?
Reviews
Best Sellers
-
22% EfficiencyUltra-Flexible Durable PowerFrom $311.99Unit price /Unavailable -
Up to 15% offUp to 15% off
1ft/2ft ANL Fuse Cable with Double Ring Terminals for 3/8 in Lugs
From $9.99Unit price /Unavailable -
Sold out36V/48V Rover Boost 10A MPPT Solar Charge Controller
99% MPPT Charging EfficiencyMultiple Electronic Protections$112.99Unit price /Unavailable -
Recent Blogs
-
-
MPPT vs. PWM Charge Controllers: What’s the Difference?
Compare MPPT and PWM charge controllers by efficiency, voltage matching, system size, climate, and cost to choose the right controller for your solar setup.
-
AGM Battery vs Lithium Battery: Which Battery is Best for You?
Though a wide range of batteries is available on the market, not all batteries fully meet your requirements. Therefore, choosing the right battery for your applications is compulsory but a...
-
AC Coupling vs. DC Coupling for Solar: How to Choose
AC coupling vs DC coupling: AC coupling is often easier when adding a battery to an existing solar system. DC coupling is usually a simpler starting point for a new...
-
Solar Charge Controller Sizing and How to Choose One
To choose the right solar charge controller, first confirm your battery system voltage and solar array specifications. Then choose MPPT or PWM, calculate the required charging current, and check the...
-
How to Install an RV Solar Kit | Renogy 2026 Guide
You've made the switch to solar. Great choice! But now the box is sitting in your garage, and you're wondering: how do I actually install a solar kit? Don't worry....
-
RV Solar Kit Buying Guide: How to Choose the Right System for Your Travel Trailer
Learn how to choose the best RV solar kit for your travel trailer. Compare systems, batteries, and setups for reliable off-grid power.
-
Upgrade Your Energy System: Four Smarter Ways to Power Your Next Adventure
The way people use power is changing. RV owners want more usable energy in limited spaces. Boat owners need equipment that can handle demanding environments. Off-grid users want better monitoring,...
