What Is the Battery Disconnect Switch?

The battery disconnect switch is an essential safety feature in your teardrop trailer or truck camper. Its primary function is to control the power flow from your RV battery, allowing you to isolate the battery from the system when needed. This switch helps preserve battery life by preventing unnecessary drain from low-voltage appliances.


On or Off? Understanding the Positions

  • Green Position (ON): The battery is connected and actively supplying power to your RV.
  • Red Position (OFF): The battery is disconnected and not powering your RV.

When to Turn Off the Battery Disconnect Switch

  1. During Storage – Appliances like the fridge and radio can draw power even when your RV is not in use, leading to gradual battery depletion. According to Battle Born, the best way to store lithium batteries is to fully charge them and then disconnect them. These batteries do not require trickle charging or maintenance while in storage. 
  2. During Maintenance or Repairs – Turning the switch to red ensures that power is cut off, minimizing the risk of encountering live wires when working on your RV.

When to Keep the Battery Disconnect Switch On

  1. When Using Your RV – If you need power for lights, appliances, or other systems, make sure the switch is in the green position.
  2. While Charging on Shore Power – If you’re plugged into shore power and want to charge your battery, the switch must be set to green. Otherwise, the battery won’t charge.
  3. During Travel – Keeping the switch on allows the battery to charge while towing.

Locating the Battery Disconnect Switch on Your nuCamp RV

The location of the switch varies by model and year. Here’s where you can find it on 2024 nuCamp models:

  • TAG & TAG XL – Front tub
  • TAB 320 S & CS-S – Inside the door, at the base of the dinette
  • TAB 400 – Exterior storage compartment on the passenger side
  • Barefoot – Under the driver’s side cushion
  • Cirrus 620 – Behind a panel in the dinette
  • Cirrus 820 & 920 – On the step leading to the bed

Final Thoughts

The battery disconnect switch is a simple yet powerful tool that enhances safety, preserves battery life, and ensures efficient power management in your RV. By understanding when and how to use it, you can maximize your battery’s lifespan and enjoy a hassle-free camping experience.


For any additional questions, reach out to the nuCamp tech department at Tech@nucamprv.com. Happy camping!


Updated: February 2025