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

Short Product Summary

The Renogy CORE 12V 50A DC-DC On-Board Battery Charger with MPPT charges your house battery two ways — from your vehicle's alternator while you drive and from solar via its built-in MPPT controller. It delivers a proper multi-stage charge to lithium, AGM, gel and flooded batteries, so your auxiliary battery is always topped up on the move and at camp.

Why This Product

Modern smart alternators won't fully charge a lithium house battery directly, and solar alone is slow on cloudy days. A DC-DC charger solves both: it takes alternator power while driving and solar power when parked, and converts it into a correct, full multi-stage charge — protecting your starter battery and getting the most into your house bank.

Key Features

• 50A DC-DC charging – fast, full charging of your auxiliary battery.
• Dual input – charges from the vehicle alternator and from solar.
• Built-in MPPT solar controller – maximises harvest from your solar panels.
• Multi-stage charging – correct charge profile for a healthy battery.
• Battery compatibility – lithium (LiFePO₄), AGM, gel and flooded.
• Protects your starter battery – isolates and prioritises correctly.

Ideal For

• Caravan, trailer & 4x4 dual-battery builds charging on the move
• Overlanders combining alternator + solar charging
• Lithium house-battery upgrades behind a smart alternator

Local Support from 4Matt Campers

4Matt Campers serves the Western Cape and Cape Town, and ships across South Africa — helping clients build reliable 12V and off-grid power systems. We'll help you wire the DC-DC charger correctly to your alternator, solar and house battery.

Technical Specifications

• Brand: Renogy
• Model: RBC50D1S-G6-SA (CORE Series)
• Type: DC-DC on-board battery charger with built-in MPPT
• Charge Current: 50 A
• System Voltage: 12 V
• Inputs: Vehicle alternator + solar (dual input)
• Charging: Multi-stage
• Battery Types: Lithium (LiFePO₄), AGM, gel, flooded

What's Included

• 1 × Renogy CORE 12V 50A DC-DC Charger with MPPT
• User manual

Optional Fitment / Upgrade Notes

For a correct install, it's worth confirming:

• Cable sizes for the run from starter battery to charger to house battery
• An ignition / D+ trigger where required for smart alternators
• Your solar array voltage/current is within the MPPT input range

Complete Your Setup

Browse the full Renogy range and 12V electrical & power gear. Pair it with a lithium battery and a solar panel for a complete charging system.

FAQ

Why do I need a DC-DC charger?
Smart alternators don't fully charge lithium house batteries directly. A DC-DC charger converts alternator (and solar) power into a correct multi-stage charge, protecting your starter battery.

Does it do solar too?
Yes — it has a built-in MPPT solar controller, so it charges from your alternator while driving and from solar when parked.

Which batteries does it suit?
Lithium (LiFePO₄), AGM, gel and flooded — selectable to match your battery.