Why is Relay Kit for Redarc In-Vehicle BCDC Battery Charger Needed for Smart Alternator
Question:
I just read where a tech on this site said this relay is REQUIRED with the variable alternator? Why would you need this when it can just be connected to the ignition like the manual states, that is unless maybe a long run to a trailer? I use this on a 2015 F250 with a 2nd battery for my winch and inverter with the blue wire on my ignition. Volt meters show seperate charging of each batt...
asked by: Steve
Helpful Expert Reply:
The 60-Amp Relay Kit for Redarc In-Vehicle BCDC Battery Charger # 331-RK1260 is needed - but not necessarily required - for use with the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D (25 amp) or # 331-BCDC1240D (40 amp) with a smart alternator because those chargers require starter battery voltage and running an ignition feed to the charger can be difficult. Your example of a long run to a trailer is on the money and exactly what it would be needed for.
I have added a cut out of the manual of the relay kit which details this.
Products Referenced in This Question
Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp
- Battery Charger
- Battery Charger
- RV/Camper
- Trailer
- 75 Ah
- 200 Ah
- Charges/Maintains
- 12V
- Solar Panels to Auxiliary Battery
- Vehicle Battery to Auxiliary Battery
- Redarc
more information >
Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 40 Amp
- Battery Charger
- Battery Charger
- RV/Camper
- Trailer
- 200 Ah
- Charges/Maintains
- 12V
- Solar Panels to Auxiliary Battery
- Vehicle Battery to Auxiliary Battery
- Redarc
more information >
Product Page this Question was Asked From
60-Amp Relay Kit for Redarc In-Vehicle BCDC Battery Charger
- Accessories and Parts
- Trailer Brake Controller
- Relays
- Redarc
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: 60-Amp Relay Kit for Redarc In-Vehicle BCDC Battery Charger
- Shop: Front Mount Hitch
- Video: Review of Redarc Trailer Brake Controller - 60 Amp Relay Kit - 331-RK1260
- Shop: Mounting Panel for Redarc Tow-Pro Elite Trailer Brake Controller Control Knob
- Q&A: Is a Battery Isolator Needed When Using 7-Way Connector To Charge the Trailer Battery
- Shop: Redarc Smart Start Battery Isolator with Wiring Kit - 12 Volt - 100 Amp
- Q&A: Is Relay Kit Needed for BCDC Installation if Ignition is Already Ran to BCDC on Trailer
- Shop: 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger
- Shop: Jumper Cables with Blue Quick Connect - 28' Long
- Shop: Redarc Smart Start Battery Isolator - Dual Sensing - 12 Volt - 100 Amp
- Q&A: How to Tell if 2019 Ram ProMaster 1500 Has Smart Alternator
- Q&A: Does 60-Amp Relay Kit for Redarc In-Vehicle BCDC Battery Charger Need Connecting to Ignition Source
- Q&A: Connecting 25 Amp Redarc In-Vehicle BCDC Battery Charger to Ignition Wire
- Q&A: Can Redarc 12 Volt to 12 Volt Charger be Used on Vehicle with Smart Alternator
- Shop: Draw-Tite Front Mount Trailer Hitch Receiver - Custom Fit - 2"
- Video: Review of WAY Interglobal RV Showers and Tubs - Black Aluminum RV Shower Panel - WAY72YR
- Q&A: What Size Wire Should you Use with a 13K-LB Winch
- Search Results: front hitch
- Shop: Trailer Hitch
- Shop: Ladder Rack
- Video: Yakima OverHaul HD Adjustable Truck Rack Installation - 2020 Toyota Tundra
- Video: Yakima OverHaul HD Adjustable Truck Rack with HD Crossbars Manufacturer Review
- Video: Yakima OverHaul HD Adjustable Toyota and Nissan Truck Bed Ladder Rack Review
- Video: SumoSprings Solo Custom Helper Springs Installation - 2017 Ford F-150
- Search Results: hitch
- Video: Choosing the Right Trailer Wiring
- Article: Trailer Wiring Diagrams
- Article: How to Choose the Right Trailer Hitch Class
- Search Results: trailer hitch
- Shop: Trailer Wiring