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

The Renogy dual-input 12V DC-DC battery charger with MPPT combines charging from the vehicle alternator and compatible solar panels in one unit. It is intended for leisure-battery installations in campervans, motorhomes and suitably designed commercial vehicles. This Shopify listing includes both 50A and 30A versions, plus optional monitoring packages: select the exact model and bundle before ordering.

Main features

• Integrated alternator charging and MPPT solar charging for a compatible 12V leisure battery
• Support for suitable conventional and smart alternators, including Euro 6 charging systems
• Charge profiles for supported AGM/sealed lead-acid, gel, flooded, lithium and user-defined battery types
• Intelligent charging control, reverse-current protection and multiple electrical protections
• RS485 communication for compatible Renogy monitoring accessories

Choose the correct charger: 30A or 50A

• RBC30D1S (30A): maximum charge current 30A; maximum solar input voltage 30V DC; maximum solar input power 400W; dimensions 244 x 146 x 77mm; weight approximately 1.41kg.
• RBC50D1S (50A): maximum charge current 50A; maximum solar input voltage 50V DC; maximum solar input power 660W; dimensions 244 x 146 x 96mm; weight approximately 1.86kg.

Both models are designed for 12V-to-12V systems, with 9–16V output range, RS485 communication and manufacturer-listed operating temperatures of approximately −35°C to +65°C. Check solar-panel open-circuit voltage in cold weather: never exceed the selected charger's PV voltage limit.

Package options

• Charger only: the selected Renogy charger, supplied installation accessories and instructions
• With Bluetooth: includes the compatible BT-2 monitoring module
• With monitoring screen: includes a compatible Renogy monitoring display
• With Bluetooth and Renogy ONE Core: adds the selected smart-monitoring equipment

Renogy lists a battery temperature sensor, battery voltage-sensing lead, ignition signal wire and user manual with these charger packages. Accessories supplied can vary by selected bundle, so check its full option name.

Important installation checks

Confirm alternator capacity, wiring, battery charge limits, input and output fuse ratings, solar-array voltage and panel wattage before fitting. Select the charger model appropriate for the vehicle electrical system and the leisure-battery manufacturer's permitted charging current. D.Y Fleet Installations can provide professional installation advice.