RV Battery Maintenance Tips: Checking Fluid Levels


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As with all RV components, to ensure you get the most out of your batteries, you must complete routine maintenance. By checking regularly to see that everything is in proper working order, you extend the lifespan of your RV battery and save money in the long run.

One of the most important RV battery maintenance tips involves checking the fluid levels of each of the batteries on your unit. So in this lesson, we teach you the essential RV battery maintenance tips you need to inspect a 12-volt lead acid battery for fluid levels and fill it up if any terminals are running low.

Expert RV battery maintenance tips for optimal lifespan

To help you get the most out of your RV batteries, Dave Solberg walks you through a demonstration on checking RV battery fluid levels. He recommends using these RV battery maintenance tips each time you inspect the batteries on your unit, which should be at least once or twice per month. To begin, Dave shows you how to remove the exhaust covers on your batteries for better access to the terminals. He talks about some of the hazards you might encounter, and explains why you might want to wear safety glasses.

With the covers off, Dave teaches you the RV battery maintenance tips necessary to gauge the level of acid in each battery. You’ll learn how to use a mirror to check how much fluid is in every terminal, as well as the importance of adding only a certain kind of water. Dave introduces a couple different methods you can utilize to add water and demonstrates the process for both. Remember Dave’s simple RV battery maintenance tips when inspecting and maintaining your unit each month, and you should have no trouble checking and refilling the fluids in your RV batteries!

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4 Responses to “RV Battery Maintenance Tips: Checking Fluid Levels”
  1. Kathy

    Im so confused. I live in travel trailer full time. Plugged into 30amp #ull time. Is my battery suppose to b on or off? Onnthe few occasions i lost power my battery lasted about 10min with minimal lights ect. It was a bran new battery. Last year.

    • Customer Service

      Hi Kathy. Thank you for visiting the RV Repair Club site and the opportunity to assist with your battery issue. Improper battery storage and charging is the leading culprit to lead acid batteries going bad and not being able to store a charge. If they are not subjected to a multistage charge every month, they will sulfate and loose capacity. This can only be accomplished by a multistage charger or large inverter. Leaving them plugged in with a typical RV converter does not work. Even though your batteries are only one year old, they are probably sulfated and that is why you are only getting about 10 minutes when the power goes off? My advice, buy a Battery Minder from Northern Tool which sends high impact waves into the battery and breaks up the sulfation without the gassing and will extend the life of your batteries by over 200 cycles.

  2. Tim

    hello, during the winter months I turn off the disconnect off to the battery on our 5th wheel and hook up a battery tender, is this a god idea or not? I have heard both ways.

    • Customer Service

      Hi, Tim. Thank you for visiting the RV Repair Club site and the opportunity to assist with your battery storage question. The Battery Tender is simply a 2 amp trickle charge that will keep the batteries topped off and prevent them from freezing, however your batteries will still sulfate in this condition and weaken. It is best to install a Battery Minder which will condition the batteries as well as keep them charged and they will last much longer. You can get a Battery Minder at Northern Tool.


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