• Renogy DC-DC On-Board Battery Charger with MPPT
  • Renogy DC-DC On-Board Battery Charger with MPPT
  • Renogy DC-DC On-Board Battery Charger with MPPT
  • Renogy DC-DC On-Board Battery Charger with MPPT
  • Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT
Excellent 4.8 across all reviews

Renogy

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

SKU RBC50D1S-BT-US
$324.99
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Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT Renogy DC-DC On-Board Battery Charger with MPPT
Renogy DC-DC On-Board Battery Charger with MPPT
Excellent 4.8 across all reviews

Renogy

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

SKU RBC50D1S-BT-US

Have Questions?

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Our U.S.-based team can help you choose the right gear, configure the perfect setup, or put together a custom quote for your project.

Call (877) 834-4299 Request a Quote

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Estimated Shipping Time

We offer free shipping on all orders across the contiguous United States. Orders are typically processed within 1–3 business days, and standard delivery takes 5–10 business days. Freight and oversized items take 10–21 business days and may require a scheduled delivery.

What Is Your Return Policy?

We offer a 30-day return window on eligible items from the date of delivery. Products must be unused, in original condition, and returned in their original packaging. To start a return, contact us at support@adventuremotion.com or call (877) 834-4299. Return shipping costs may apply for non-defective items. Damaged or defective items are replaced at no cost to you.

Frequently Asked Questions

Do you offer financing?

Yes — we partner with Affirm so you can split your purchase into easy monthly payments with 0% APR options. Just select Affirm at checkout.

Are you an authorized dealer?

Yes. Adventure Motion is an authorized online dealer for all brands we carry. That means your manufacturer warranty is fully valid and protected.

Can you help me choose the right product?

Absolutely. Call us at (877) 834-4299 or email support@adventuremotion.com — our team specializes in outdoor gear and can match you to the right product.

What if my item arrives damaged?

Contact us within 48 hours of delivery at support@adventuremotion.com. We'll arrange a replacement at zero cost to you — no questions asked.

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The Renogy 12V 30A/50A DC-DC On-Board Battery Charger with MPPT is a dual-input charger that tops up a house battery from two sources at once: your vehicle's alternator while driving and solar panels whenever the sun is out. It is designed for campervans, RVs, overland rigs, and boats that keep a separate auxiliary battery for lights, fridges, and other onboard loads.

A built-in MPPT solar input pulls the most energy from connected panels, and the charger switches intelligently between alternator and solar charging, including a low-solar cutoff mode. It works with both traditional and smart alternators, using an ignition signal wire for smart-alternator vehicles, and a built-in voltage sensitive relay keeps the starter and house batteries isolated while trickle-charging both once the house battery is full. The 50A model accepts series-wired panels up to 50V, while the 30A model accepts up to 30V.

The unit supports AGM, sealed, gel, flooded, lithium, and user-defined battery profiles, and uses a temperature sensor for accurate charge compensation in hot or freezing conditions. All wiring lands on a single negative-terminal side for simpler installation, and protections cover the batteries, panels, and alternator, including soft-start and nighttime reverse-current protection. Options add a Bluetooth module for monitoring in the DC Home app, or a Bluetooth module with the Renogy ONE Core monitoring hub.

What's in the Box (Charger)

  • 1 x 12V DC-DC Dual Input Battery Charger (30A or 50A)
  • 1 x Battery Temperature Sensor
  • 1 x Battery Voltage Sensor
  • 1 x IGN Signal Wire

Shared Specifications

  • System Voltage: 12VDC
  • Battery Voltage Range: 9-16VDC
  • Battery Types: AGM/SLD, GEL, FLD, LI, USER
  • Charging Efficiency: 94%
  • Alternator Input Voltage: Traditional: 13.2-16VDC; Smart: 12-16VDC
  • Self-Consumption: 60mA
  • Idle Power Consumption: <30mA
  • Temperature Compensation: -3mV/°C/2V (non-lithium); 0mV/°C/2V (lithium)
  • Terminal Size: M8 x 1.25 - 10mm
  • Terminal Range: 8AWG-4AWG
  • Ground Type: Negative terminal / common negative ground
  • Communication Protocol: RS485
  • Operating Temperature: -31°F to 149°F / -35°C to 65°C
  • Storage Temperature: -40°F to 176°F / -40°C to 80°C
  • Humidity: 0%-95%, no condensation

50A Model

  • Max Charging Current: 50A
  • Max Solar Input Voltage: 50V
  • Max Solar Input Power: 660W
  • Max Alternator Input Power: 660W
  • Input / Output Fuse Rating: 75A-100A
  • Dimensions: 9.61 x 5.75 x 3.78 in / 244 x 146 x 96 mm
  • Weight: 4.10 lb / 1.86 kg
  • Certifications: CE, RoHS, FCC Part 15 Class B, ETL listed to UL 1741 & CSA C22.2

30A Model

  • Max Charging Current: 30A
  • Max Solar Input Voltage: 30V
  • Max Solar Input Power: 400W
  • Max Alternator Input Power: 400W
  • Dimensions: 9.61 x 5.75 x 3.03 in / 244 x 146 x 77 mm
  • Weight: 3.13 lb / 1.4 kg
  • Certifications: CE, RoHS, FCC Part 15 Class B, ETL

  • Charges a house battery from both the alternator and solar panels
  • Built-in MPPT solar input with 94% charging efficiency
  • Works with traditional and smart alternators
  • Intelligent switching between charging sources with Low Solar Cutoff Mode
  • Built-in voltage sensitive relay isolates starter and house batteries and trickle-charges both
  • Supports AGM, gel, flooded, lithium, and user-defined battery settings
  • Battery temperature sensor for accurate charge compensation
  • Protections for batteries, solar panels, and alternator, including soft start and reverse current
  • Optional Bluetooth module for monitoring in the DC Home app

What kind of alternator does this charger work with?
Both traditional and smart alternators. for smart alternators, which vary their output with operating conditions, connect the charger through the vehicle ignition port using the included ign signal wire.
What happens once the house battery is fully charged?
The built-in voltage sensitive relay keeps the house battery topped up with a trickle charge and also trickle-charges the starter battery from solar, while keeping the two batteries isolated from each other.
Which battery types can it charge?
Gel, agm, sealed, flooded, and lithium batteries, plus a user-defined mode. set the correct battery type after installation.
How do i change the battery type without a screen?
Press and hold the push button on the pv+ and alt+ side of the charger. the led cycles through colors, each representing a battery type. the manual lists the color for each type.
How much solar can i connect?
The 50a model accepts up to 50v and 660w of solar input. the 30a model accepts up to 30v and 400w.
Can i monitor it from my phone?
Yes, with a renogy bluetooth module, which is included in the bluetooth options, using the dc home app.

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