Does the Curt RVi Series Towed Battery Charger+ Provide Backflow Protection?
Updated 01/19/2026 | Published 12/30/2025
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Question:
I just ordered RVI74FR and wanted to know if the circuitry includes protection from back-feeding power to the motorhome. I see a separate product, Roadmaster 690 Single Park Light Diode, that is used to allow only one way power flow, but not sure if it is needed with RVI74FR. thanks very much
asked by: Fred C
Expert Reply:
Hey Fred, welcome back. The Curt RVi Series Towed Battery Charger+ for Flat Towing item # RVI74FR does indeed provide backflow protection. You won't have to worry about damaging your motorhome when using this on your 2020 Ford F-150.
Adding the Roadmaster Single Park Light Diode item # RM-690 to the Curt item # RVI74FR would be redundant.
If you have any additional questions, go ahead and click on the box that says Reply to Jerred H and I'll be happy to answer them.
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Product Page this Question was Asked From
CURT RVibrake Towed Battery Charger+ for Flat Towing
- Accessories and Parts
- Flat Tow Brake System
- Battery Charge Line Kit
- CURT
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Jerred H.
1/19/2026
Hey Fred, how did the Curt RVi Towed Battery Charger+ work out on your F-150? Did the built-in backflow protection perform as expected? Your update could make it easier for others setting up a similar flat tow system.