Can A Winch Battery And Trailer Breakaway Battery Both Be Charged Through 7-Way 12v Hot Lead
Published 07/20/2023
Products Featured in This Question
Question:
I am mounting a winch on my car trailer and I’m wanting to wire the winch battery to the 7way connector to maintain battery charge. I also have a brakeaway battery that is wired to the 7 way connector. Am I able to maintain charge for both battery’s off the 12v accessory terminal with out damaging anything? Or do I need to wire something in between them to prevent damage?
asked by: Tom
Expert Reply:
You would be able to charge both the trailer battery as well as the breakaway battery through your 7-way connection to the tow vehicle. This is very standard practice with most people just running a line from each battery to the 12v accessory terminal in the junction box # 3375601101. A 7-way on a vehicle is typically rated for 40amps DC so you won't be getting much going to the batteries once everything is divided up to power any other accessories tied into the circuit so this would be better for just topping off the battery/maintaining charge while on the road.
Winches typically use quite a bit of power so you'll most likely quickly drain the battery and not be able to recharge it fast enough through the 7-way connection. You'd be better off using a charger like the Redarc In-Vehicle BCDC Battery Charger # RED96FR. This charger would pull power from the tow vehicle's battery (and alternator) to recharge the trailer battery. You'll need to pick up two fuses # RED76FR for your connections to each battery as well.
Product Page this Question was Asked From
Bulldog Winch Rear Wiring Kit - Quick Connect to Terminal End - 2 Gauge - 20' Long
- Accessories and Parts
- Electric Winch
- Wiring
- Quick Connects
- Wiring Kits
- 20 Feet Long
- 2 Gauge Wire
- Bulldog Winch
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: stainless screws
- Shop: Side-Door Bar Lock Assembly - 55" Long
- Search Results: diode
- Q&A: Spare Tire Cover for 30" Diameter Tire on Gooseneck Trailer
- Shop: Cam-Action Lockable Door Latch w/ 45" Pipe for Enclosed Trailers - Aluminum - Black
- Shop: Replacement Hasp for Polar Cam-Action Latch Kits - 1" Wide - Zinc-Plated Steel
- Shop: Square Corner T-Strap Hinge w/ Reverse Bracket - 270 Degree - 16" Long - Zinc Plated Steel
- Shop: Replacement Hasp for Polar Cam-Action Latch Kit - 2" Wide - Aluminum
- Shop: Square Corner T-Strap Hinge w/ Reverse Bracket - 270 Degree - 16" Long - Stainless Steel
- Shop: Square Corner T-Strap Hinge w/ Reverse Bracket - 270 Degree - 16" Long - Aluminum
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Shop: Trailer Wiring
- Search Results: trailer jack
- Shop: Suspension Enhancement
- Video: A Look at the Power Mountain Tallboy 6 Ton Off-Road Bottle Jack with a Military Cargo Trailer
- Article: How to Measure for Trailer Hitch Drop
- Q&A: How to Replace a Lance 6-Pin Plug w/ a Standard 7-Way Connector
- Video: B&W Companion OEM 5th Wheel Hitch Manufacturer Breakdown
- Search Results: trailer lights
- Q&A: Does Truck with 6-1/2 ft bed Have to Use Slider Hitch for Turning Clearance with Fifth Wheel Hitch
- Shop: Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: How to Measure Your Trailer Wheel Bolt Pattern
on Accessories and Parts
