Why Is My RV Battery Disconnect Switch Not Working[Fixing Guide]

The RV battery failing to perform poses a huge problem to the user. Because the switch in play with the battery keeps it in good condition and even has a better performance. When you can identify the problem it is advisable to turn the system off for the safety of your gadgets or else you incur unplanned to yourself.

It is advised many times not to worry yourself because it is not the end of the world if you get such a problem. Lack of RV in your system poses many risks by terminating the connection between the batteries and the switch itself. Troubleshooting the process above is quite easy provided you follow the mu guides below.

Whether you are new or old to this connection this is the best article for you both to troubleshoot and come to the end of this. Once you know where the problem originates you can easily solve the problem within the shortest time possible. Moreover, look at the solution to the burning questions in the frequently asked section, and lastly, read the conclusion to get the general view.

How do you check an RV battery disconnect switch?

How do you check an RV battery disconnect switch
Source: thervgeeks.com

The recently manufactured models of RV batteries come with their disconnect switch. The disconnect switch is available for the models that don’t come with it also. The RV battery disconnect switch can perform many functions within a shorter period saving power usage, and battery life, and keeping the battery functioning all the time.

The common function of the RV disconnect switch gives you an easy task to chop off the primary RV circuit from the battery. The switch is usually positioned almost on the side of the battery or even near the maintenance section.

The most interesting part about the RV battery disconnect switch is that it acts as a safety measure that enables you to terminate power. Remember this keeps you safe from electric shock when doing maintenance that helps you to perform the solution program without tampering with the tasks you are undertaking.

If you connect your RV battery to power with the help of the station you can recharge your batteries in the first place. You can decide to terminate the connection for the RV main power supply. A power surge can never occur if you follow the correct measures to do so.

How do you test a battery disconnect solenoid on a camper?

How do you test a battery disconnect solenoid on a camper
Source: rv.net

Motorhome batteries disconnect relays are an easy way to preserve the battery power current when the vehicle is not used for several months. To the point where the car is off the solenoid can turn off. This is usually the best method to prevent theft issues. Provided the solenoid is deactivated the car keys won’t help you because the vehicle will not power on.

Checking the voltage of the batteries is one efficient way of testing the solenoid at the primary lugs in the solenoid. In most cases, it should have differentiable characters between one side of the house battery and the chassis battery. When the solenoid switch turns a click sound should be heard.

Based on the solenoid disconnect am doing this to show how the testing is easy even for you after reading this article. To keep your vehicle moving smooth and easy it is needed to keep it in the vehicle’s starter. I think no one will ever wish to be disturbed by a problem then later it was just a faulty solenoid that was head aching you.

I assure by following the steps in my article below you will be stress-free as it will be easy to perform the task on your own without any help from someone. A solenoid works by transferring power currents to the starter. From my view, this part is so delicate that any tasking appliance requires electricity from the battery to the starter.

You should have in mind that not all car issues are caused by the solenoid because even your car battery can be a problem if your car is not powered on. Using the jumper cables test the battery and if you see a voltage of 12 volts then your battery is in a good condition.

Tools to use

EquipmentFunctionEssential products
MultimeterUsed to read voltages on the solenoid 
SolenoidTransfers electric current to the starterCheck for the best Solenoid from Amazon
Protective eyewearActs as a safety measuresCheck Amazon for the quality Multi-meter

Do batteries disconnect switches work?

Do batteries disconnect switches work
Source: galvinpower

The battery disconnect solenoid is technically a closing switch that works by performing tasks on the battery voltage flowing through the coil terminals in a certain direction for closing or opening in the opposite direction. For safety precautions wear glasses when doing the job with battery wiring.

The RV battery disconnect switch terminates the electrical current flowing between the RV and the batteries. To save the switch from fires caused by electricity and even prevent it from being stolen by robbers when the RV is not in use. It is good to deactivate the power for safety precautions when operating the machines.

The device used works as the load on the battery, at a minimum speed flickers power currents from the battery to the device until the battery loses all its power. The RV disconnect switch builds a bridge between the connected battery and the device preventing the flow of current and keeping the energy of the battery for later use.

Deactivating the disconnect switch when keeping off the camper so that the batteries you use can lose energy at a minimum rate. But they discharge rapidly when two weeks pass and given the power is deactivated for a longer period. Provided you use your batteries following the above technique then the lifespan of your batteries will go long.

Optional needs

  • Jumper cable
  • A friend to work with you

Step 1: Locate the solenoid you will use

Getting to know the exact position of the solenoid is the step you should do. Locating the position of the solenoid looks very easy but in a real sense, it is the toughest thing you will ever do. Different car models will give you the solenoid in different positions.

Step 2: Press Test

On the test that is where you will need a friend because when he powers on the car you will be busy looking at the solenoid. Always ensure you are making a favorable distance to prevent the ignition from the engine unless you are wearing protective eyewear.

Provide the accurate results you get and listen to the click noise if it is loud and strong to indicate that the solenoid has adequate electricity. Otherwise, just know there is a problem in the solenoid.

Step 3: Multimeter

The multimeter is used to calculate the voltage in the solenoid. Connect the positive wire to the positive terminal in the solenoid. The negative wire in the multimeter is connected to the battery. Tell your friend to start the vehicle for the last time when the engine is activated you will notice the voltage decrease. A slight drop of voltage below 1 volt is accepted, anything above that shows you that you can replace a new solenoid.

Step 4: Inspection

Inspect the whole system to see if the connection and all the work are accurately done. In case of any poor connection just correct it before it causes damage to you and your system. Always pay a close look and perform a higher maintenance plan for your devices before the problem worsens and becomes beyond the control of your hands. Moreover, keep yourself safe at all costs.

Should RV battery disconnect be positive or negative?

Both signs of power are done for an RV disconnect. It is advisable to start with a positive followed by a negative sign. When you are planning to terminate the connection in an older battery, start with the negative terminal followed by the positive terminal.

The battery disconnect switches are manufactured to terminate electric current, which protects the users against electric fires and theft the robbers if the equipment is in use for a long period. This also acts as a good method to turn off electrical power when doing maintenance plans or protecting the batteries from draining quickly.

Frequently asked questions

1. What happens when the RV battery disconnects the switch?

The operation terminates the flow of the electrical power from the batteries and the RV. To prevent theft and protection against the electrical fires of the RV appliances flip the switch. Powering off the whole system is a safety measure when interacting with the equipment.


From my article above I hope you can understand the causes that lead to the switch, battery, and the solenoid not working. It is good to keep your health the priority. When operating with the wires in the car are careful to prevent any possible damage in the end.

The causes above have their solutions that can help you to correct any issues in the system. If you find it difficult to troubleshoot, contact help from an expert to keep yourself safe and the appliances.

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