Curt 52204 Towed Vehicle Battery Charger - For RViBrake4 (CURT/RVi 52202 Compatible)

Stop worrying about a dead toad battery on long driving days. This Towed Vehicle Battery Charger is designed for use with the RViBrake 4 supplemental braking system (Curt 52202). It connects your motorhome’s 12V auxiliary feed to the towed vehicle’s battery to maintain charge while the brake unit and vehicle parasitics draw power. The result: reliable braking performance and no end-of-day jump starts.

• Purpose-built for RViBrake 4: Keeps the toad battery topped while the brake system cycles.
• Uses coach 12V feed: Pulls clean power from your motorhome via the 7-way umbilical (12V aux pin).
• Protective design: In-line fusing and one-way charging logic help prevent backfeed to the coach.
• Simple, tidy install: Minimal wiring—mount the module, connect to coach 12V and toad battery, done.
• Set-and-forget: Automatically maintains charge during travel; no switches to manage.
• Prevents low-voltage faults: Avoids nuisance shutdowns and weak-battery issues in the braking unit.

What’s Included

• Towed Vehicle Battery Charger module for RViBrake 4 (Curt 52202)
• Inline fuse(s) with holder(s)
• Ring terminals / quick connects (varies by kit)
• Mounting hardware
• Installation instructions

Technical Specs

Fit & Installation Notes

• Coach side: Verify your motorhome’s 7-way 12V aux pin is live and fused (often 20–40 A from chassis fuse block).
• Toad side: Mount the module securely; route positive lead to the battery with the provided inline fuse as close to the battery as possible.
• Ground: Use a clean chassis ground or the battery negative post.
• Cable gauge: Follow the guide in the instructions; shorter runs can use 12 AWG, longer runs often 10 AWG.
• Do not substitute a jump pack: This charger properly maintains voltage/current for day-long drives; jump packs are not designed for continuous duty.

Why This Over “No Charger”

• Prevents low-voltage faults and performance drop in the braking system.
• Avoids dead battery at fuel stops or the campsite.
• Protects both vehicles with fused, directional charging vs. improvised jump-leads.

Common Questions

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