RV Maintenance Tips Before Cold Weather Hits

As the days get shorter and the nights cooler, it’s the perfect time for RV owners to prepare their rigs for fall adventures—and eventually, winter storage.

Proper maintenance not only keeps your RV in top shape but also protects your investment from damage caused by colder temperatures, moisture, and inactivity. Here’s a comprehensive guide to getting your RV ready for the cooler months.

1. Check and Maintain Your Battery

Your RV’s battery is one of its most important components, and cold weather can reduce its efficiency. Most nuCamp teardrops and truck campers have a 100Ah lithium battery standard since 2023, which makes winter storage a bit easier than traditional lead-acid batteries. Here’s how to handle both types:

For Standard Lead-Acid Batteries

You have three options for winter storage:

  1. Keep the Battery in the Camper with Shore Power
    • Plug your RV into shore power for the winter.
    • Turn off all appliances and electronics to prevent unnecessary power draw.
  2. Remove the Battery and Use a Trickle Charger
    • Take the battery out of your camper.
    • Place it on a trickle charger to maintain a safe voltage throughout the season.
  3. Remove the Battery Without Charging (Least Ideal)
    • Store the battery in a safe, accessible location.
    • Check the voltage periodically.
    • Ensure the voltage does not drop below 12.4 volts, as this can affect battery life.

For Lithium Batteries

Lithium batteries are easier to manage in winter. You have two main options:

  1. Leave the Battery in the Camper
    • Turn the battery disconnect switch to the red position.
    • Pull the fuse for the solar controller to prevent any drain.
  2. Remove the Battery
    • Lithium batteries can safely be disconnected from your RV for winter storage.
    • Unlike lead-acid batteries, trickle charging is not necessary.

Pro Tip: Lithium batteries are more forgiving in colder temperatures than lead-acid batteries, but storing them above freezing will help maintain optimal performance and lifespan.

Watch our video about storing your battery for winter.

2. Prevent Mold and Moisture Damage

Cooler weather often brings more rain, humidity, and condensation, which can lead to mold and mildew inside your RV. To prevent this:

  • Ventilate: Open vents or windows slightly during dry days to keep airflow moving.
  • Use moisture absorbers: Place desiccants or moisture-absorbing packs in cabinets, closets, and under beds.
  • Clean thoroughly: Before storage, clean the interior, wipe down surfaces, and make sure fabrics are dry.
  • Check seals: Inspect roof seams, window seals, and doors for leaks. Recaulk or reseal as needed to prevent water intrusion.

Check out our video guide to inspecting the caulk on your RV here.

Watch our video on preventing condensation, which shows you how to ventilate your refrigerator, windows, and gives tips on storing your camper with and without shore power.

3. Winterizing Your RV

Even if you’re planning to use your RV in early fall, winterizing can protect it during colder nights or extended storage:

  • Drain and protect water systems: Drain fresh, gray, and black water tanks. Add RV antifreeze to water lines to prevent freezing if you plan to store it in freezing temperatures.
  • Protect plumbing and appliances: Remove or bypass water filters, and make sure pumps are turned off. Check for any water left in hoses or tanks.
  • Cover and store your RV: Use a breathable RV cover to protect against snow, ice, and UV damage. Avoid plastic tarps that trap moisture and can promote mold growth.

Need a step-by-step guide to winterizing? We have videos for most of our models here — just search for your model.

4. General Fall Maintenance Tips

  • Inspect tires: Check for wear, cracks, or low pressure. Cold weather can make tires more susceptible to damage, so inflate to the recommended levels. Check out our tire safety video here.
  • Check brakes and lights: Make sure all lights function properly and brakes respond well before taking the RV on longer fall trips.
  • Clean and protect the exterior: Wash off dirt, grime, and road salt. Apply a protective wax coating to preserve your RV’s finish.

Bonus Tip: Keep a Fall Maintenance Checklist

Keeping a checklist of fall and pre-winter maintenance tasks ensures nothing gets overlooked. From batteries to tires, from mold prevention to winterizing, having a plan makes RV upkeep simpler and stress-free.

Give your RV some TLC

Fall is the perfect season to give your RV some TLC before colder weather sets in. With proper maintenance, storage, and winterizing steps, you’ll protect your investment and ensure your rig is ready for your next adventure—whether it’s a crisp autumn weekend trip or springtime getaway.

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