Renogy 50A DC-DC Battery Charger with MPPT, Bluetooth & IP67 Protection

Charge your auxiliary battery from both your vehicle's alternator and solar panels with one intelligent charging system. The Renogy 50A DC-DC Battery Charger combines DC-to-DC alternator charging with integrated MPPT solar charging, making it well suited for RVs, camper vans, overlanding vehicles, boats, and off-grid electrical systems.

Supporting 12V/24V input and 12V/24V battery systems, the charger can deliver up to 720W of charging power while automatically prioritizing solar energy when both solar and alternator sources are available. Built-in Bluetooth provides convenient wireless monitoring and control, while the rugged IP67-rated enclosure helps protect the charger in demanding mobile and outdoor installations.

Key Features

• 50A DC-DC Charging – Provides controlled charging from a vehicle alternator to an auxiliary battery bank
• Integrated MPPT Solar Controller – Combines alternator and solar charging in one unit
• Dual-Input Charging – Accepts power from compatible solar panels and vehicle alternators
• Up to 720W Output – Supports demanding mobile and off-grid charging systems
• 12V/24V System Support – Compatible with 12V and 24V input and battery configurations
• 99% MPPT Tracking Efficiency – Designed to maximize available solar energy harvest
• Built-In Bluetooth – Enables wireless system monitoring and control
• Solar Priority Charging – Automatically prioritizes available solar energy before alternator power
• Multi-Stage Charging – Bulk, Boost, and Float charging stages
• Multiple Battery Chemistries – Supports compatible lithium, AGM, gel, and flooded lead-acid batteries
• IP67 Protection – Dust-tight and protected against temporary water immersion
• Built-In Safety Protection – Protection against reverse polarity, over-voltage, over-current, and overheating

Technical Specifications

Compatibility

Designed for compatible 12V and 24V auxiliary battery systems in RVs, camper vans, trucks, overlanding vehicles, boats, and other mobile or off-grid power systems. It supports lithium and common lead-acid battery chemistries, including AGM, gel, and flooded batteries.

System voltage, alternator output, solar-array specifications, wiring, fusing, and battery requirements should be verified before installation.

What's Included

• Renogy 50A DC-DC Battery Charger with MPPT
• Manufacturer documentation

FAQ

What does a DC-DC battery charger do?
It regulates power from a vehicle's alternator to safely charge a separate auxiliary or house battery. Unlike simply connecting the batteries together, the charger controls the charging process according to the auxiliary battery's requirements.

Can this charger use solar panels and the alternator?
Yes. It combines DC-to-DC alternator charging with an integrated MPPT solar controller, allowing a compatible system to use both charging sources.

Does it work with lithium batteries?
Yes. The charger supports compatible lithium batteries as well as AGM, gel, and flooded lead-acid batteries. The appropriate charging configuration should be selected for the battery being used.

Does it require a separate Bluetooth module?
No. This model has built-in Bluetooth for compatible wireless monitoring and control.

Is it waterproof?
The enclosure carries an IP67 rating, meaning it is dust-tight and protected against temporary immersion under the conditions specified by the IP67 standard. I would use the specific IP rating rather than market it simply as “waterproof.”