50A 12V dcc50s DC-DC On-Board Battery Charger with MPPT

50A 12V dcc50s DC-DC On-Board Battery Charger with MPPT
starts- reviews
CAD $399.99 CAD $319.99


CA stock, usually ships in 1 to 3 business days.



Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! This multi-stage, multi-input battery charger can charge a service battery from a starting battery linked to an alternator or by utilizing solar panels connected directly to the unit. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! It's the smart way to keep yourself fully charged and off-grid longer! And with multi-stage charging and multi-chemistry functionality, Renogy's DC to DC MPPT Charger has you covered whether you're using Flooded, Gel, AGM, or Lithium batteries. With RJ45 communication port featured, you can unlock monitoring features exclusively using the BT-2 Bluetooth Module and Renogy DC Home App, control and monitor the device remotely through your phone in real time.

If you have any questions regarding this product, please submit a case.

Key Features

  • Multi-input for Battery Charging
  • Renogy DC-DC On-Board Battery Charger is designed to charge service batteries from a starting battery linked to an alternator or by utilizing solar panels connected directly to the unit, offering multiple charging options and ensuring your battery stay fully charged.
  • 3-phase MPPT Charging Technology
  • With Built-in Maximum Power Point Tracking (MPPT), Renogy DC-DC On-Board Battery Charger will charge your service batteries with maximized solar power, providing 3-phase charging (Bulk, Boost and Float) to regulate the whole charging and ensure the batteries will be accurately charged at the correct voltage levels to 100%.
  • Multiple Protections
  • Renogy DC-DC On-Board Battery Charger has multiple intelligent protections includes battery isolation, over-voltage protection, battery temperature protection, over-current protection, overheat protection, reverse current protection, solar panel and alternator reverse polarity protection, guaranteeing charging safety and protecting you batteries.
  • Light & Small, Ready to be Set Up
  • With only 9.6in in length, 5.7in in height, and 3.13lbs in weight, Renogy DC-DC On-Board Battery Charger is ready to be installed and adapt to any tiny narrow installation space, resolving your concern from limited room in you vehicle.
  • RJ45 Communication Port Featured
  • Bluetooth Monitoring Ready! Exclusively available with the BT-2 Bluetooth Module accessory and Renogy DC Home App available on the IOS and Google Play Stores, you can monitor this device remotely and simply through your phone and stay constantly updated.


Package Includes

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

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

1 x

Battery Temperature Sensor

Battery Temperature Sensor

1 x

IGN Signal Wire

IGN Signal Wire

1 x

RS485 Communication Cable

RS485 Communication Cable

1 x

OPTIONS:Monitoring Screen for DC-DC MPPT Battery Charger Series

Monitoring Screen

1 x

OPTIONS:BT-2 Bluetooth Module W/ RS485 Port

BT-2 Bluetooth Module W/ RS485 Port

1 x

Electrical Parameters Mechanical Specifications
System Voltage: 12VDC Ground Type: Negative
Battery voltage Range: 9-16VDC Terminal Size: M8*1.25 - 10mm
Maximum Charging Current:50A Temperature Compensation: -3mV/C/2V
Battery Types: SLD/AGM, GEL, FLD, LISER Operating Temperature Range : -31°F - 149°F
Service Battery Charging Mode: MPPT Storage Temperature Range: -40°F - 176°F
Starting Battery Charging Mode: PWM Operating / Storage Humidity: 0%-95%, No Condensation
Charging Efficiency: Up to 97% Dimensions: 9.6*5.7*3.0in
Max. Solar Input Voltage: 25V Weight: 3.13Ibs
Max. Solar Input Power: 660W @ 50A Communication Protocol: RS485

Alternator Input Voltage:

Traditional Alternator: 13.2-16VDC
Smart Alternator (Euro 6): 12-16VDC

Max. Alternator Input Power: 660W @ 50A  
Self-consumption: 60mA  

Warranty Information

Material and workmanship warranty 2 Year


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 controller 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 on page 12&15.
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 on page 15 for Battery Type LED.
5. Notes 
1. Do not reverse the polarity since the reverse polarity of the battery connections can cause injury and damage to the device.
2. When connecting the charger and the battery, make sure the battery poles are clean when connecting the terminals, select a sufficient cross-section for the connection cable, tighten the nuts and bolts with proper torque as loose connections may cause overheating.
3. Be careful not to over-torque the terminals on the DCDC as over-torquing may cause irreparable damage (Do not exceed 16 N-m / 3.3 ft-lb).
4. Use the following cable colors:
Red: positive connection
Black: negative connection"
5.If the battery charger is connected to the starting battery and solar panels at the same time, the maximum charing current will be 25A for each; if the battery charger only connects one of the two DC inputs, the maximum charing current will be 50A.
More questions about your off-grid power system? Learn more from Renogy Learning Center!
Renogy Rover PG 20 Amp MPPT Solar Charge Controller

Please click the links below to download Manual:  RBC3050D1S Fuse Installation Instructions

Reviews Hide Reviews

Renogy 50A DC-DC On-Board Battery Charger with MPPT 50A 12V dcc50s DC-DC On-

normand Demontigny ( Demontigny ) on May 9th 2022

Je l'ai reçus rapidement! Mais je n'ai pas mis en place car j'ai déjà un mppt et aussi a cause que j'ai du 36,7 volts de panneaux solaire! Ce module qui est très bien construit est pour les panneaux 12 volts seulement. J'adore les produit de RENOGY . Vous pouvez leurs faire confiance

Simple and effective

Drew Elvins on Apr 26th 2022

Easy to get installed and working. Got it paired with the RCM-BT2-CA, RBT100LFP12SH-CA, and RCM-HUB-CA without any issues.

Ideal for a van conversion

Roger Matthews on Apr 4th 2022

If you are in a van and have space limitations, this is an ideal device that will help you to convert to lithium batteries. Our 2000 Pleasure Way van had a 100 ah AGM battery that was fine until the furnace had to run and the CPAP was running one night. This DC to DC charger works flawlessly to safely charge the lithium batteries and the integrated solar charge controller means it does 2 jobs, saving you valuable space. It is limited to 25 volts DC from the solar panels so they have to be wired in parallel but that’s the only drawback. If you have room for separate devices, you have more options but this was a vital part of our upgrade. Well worth the price!

dc to dc charger

Bernard Dubuc on Sep 26th 2021

I am very happy with my purchase I built my van in the south west where it never rains, this summer i drove to Quebec Canada and it rained for 5 days straight, my batteries ran empty so I purchased this unit and it saved the situation, highly recommended.

Love It!

Steve Mohammed on Apr 30th 2021

I own a Prius and camp/road trip a lot. I run a lot of devices like a portable fridge and needed something to keep my fridge running while I camp but able to charge my battery at the same time. This device recharges my batter in 2 hours while I drive but the coolest part is I am able to solar charge my battery thought this. The ability to have 2 devices in one (DCtoDC Charger and MPPT) took up less room in my car. That means I can camp for days and my fridge will run the whole time.

Dual input MPPT charger

dan vezina on Mar 4th 2021

Order online and with quick delivery. This will replace my existing MPPT charger to control overall charge profile from all sources. Great price for RV application.

DCC50S. B2B chargeur

Benoit on Aug 5th 2020

Je viens juste de compléter l’installation et je suis impressionné par le bon fonctionnement du chargeur. Fournit un peu plus de 50amp. au début et abaisse progressivement la puissance en fonction de l’état de la batterie. Ma batterie sera dorénavant complètement chargée et maintenue par mon panneau solaire lors qu’à l’arrêt. Grosse déception cependant, ce chargeur est conçu pour aussi gérer le panneau solaire d’une façon vraiment intéressante mais comme la tension de mon panneau excède 25 volts je ne peux l’utiliser (Max solar input voltage : 25V), une spécification que je n’avais pas considéré :(. Je devrai songer à remplacer mon panneau.