When you’re towing a utility trailer, boat, or livestock rig, reliable power on the trailer itself is essential. From running fridges and lights to powering pumps and winches, auxiliary power gives you freedom and functionality wherever you go.
REDARC’s BCDC Trailer Charger range is designed to solve the challenge of charging trailer-mounted batteries through the 7-way connection. With purpose-built solutions tailored for different vehicles, terrains, and electrical systems, you can choose the right charger to keep your trailer powered in every condition.
Learn more about what a Trailer Battery Charger is.
WHY YOU NEED A TRAILER-MOUNTED CHARGER
Many modern trailers carry their own auxiliary batteries. Simply wiring these directly to the tow vehicle often causes problems including:
- Voltage drop from long cable runs
- Smart alternators reducing output for fuel efficiency
- Different charging requirements for AGM, Gel, and Lithium batteries
- Environmental factors like heat, water, and dust affecting performance
- Trailer accessories drawing more power than the system can supply
A REDARC BCDC Trailer Charger eliminates these issues by mounting directly on the trailer. It manages the power taken from the vehicle and delivers the correct charge profile to your auxiliary battery every time.
REDARC BCDC TRAILER CHARGER OPTIONS
REDARC offers two dedicated trailer-mounted chargers: the BCDC Trailer and the BCDC Trailer S. Both provide reliable charging and protection, but each is tailored to specific needs.
BCDC TRAILER
Best for: Heavy-duty off-road and marine environments.
The BCDC Trailer is engineered for the toughest towing conditions. It’s fully sealed, vibration resistant, and built to withstand dust, water, mud, and salt spray.
Key features:
- Sealed, potted electronics for complete protection
- Compact, rugged enclosure
- Built-in Smart Start Battery Isolation
- Compatible with AGM, Gel, standard lead-acid, and lithium batteries
- LED status indicators for quick diagnostics
If you tow in harsh, punishing environments—like backcountry trails, desert tracks, or boat ramps—the BCDC Trailer is built to last.
BCDC TRAILER S
Best for: Modern vehicles, highway towing, and solar integration.
The BCDC Trailer S takes the proven BCDC platform and adds features designed for convenience and modern setups.
Key features:
- Same reliable charging as the BCDC Trailer
- Compact, clean design
- Built-in Smart Start Battery Isolation
- 40A MPPT solar regulator with REDARC Green Power Priority
- Compatible with AGM, Gel, standard lead-acid, and lithium batteries
- LED status indicators for easy monitoring
If your towing setup involves highways, campgrounds, or job sites and you want solar capability with a streamlined install, the BCDC Trailer S is the perfect fit.
WHICH ONE SHOULD YOU CHOOSE?
Here are some common scenarios:
- Off-road adventurers & overlanders (rugged, wet, remote conditions): Choose the BCDC Trailer
- Marine trailers & boat owners (salt spray, boat ramps): Choose the BCDC Trailer
- Utility & RV trailers (modern vehicles, heated lithium batteries): Choose the BCDC Trailer S
- Drivers who want solar integration: Choose the BCDC Trailer S
KEY BENEFITS OF BOTH MODELS
No matter which option you choose, you’ll get:
- Reliable charging for trailer-mounted auxiliary batteries
- Elimination of voltage drop with on-trailer installation
- Compatibility with multiple battery types
- Maintenance-free operation
- Peace of mind knowing your starter battery is protected and your trailer stays powered
For anyone towing with auxiliary batteries, a REDARC BCDC Trailer Charger is the ultimate solution for reliable trailer power. Whether you’re off-road in the elements or hauling down the highway, REDARC has a charger to match your environment and needs.
Explore the REDARC BCDC Trailer Charger range or talk to an authorized dealer to find the perfect fit—and tow with confidence knowing your power needs are covered.
