If the house battery of your RV is not functioning, the most likely culprit is that the battery has been drained empty. If this function is unavailable, the Battery can be charged with jumper cables and another vehicle, just like any car. ![]() ![]() Some RVs have an “Emergency start” switch located on the dash that draws power from the deep cycle battery to the chassis battery. If the battery is free from debris and within its expiration date, then it likely just has an insignificant charge left to power the vehicle’s starter. In this situation, check the expiration date on the battery and visually examine the unit for corrosion or other damage. If you narrowed the issue down to the chassis battery, your RV most likely is not starting but other functions still work. If your RV was exposed to cold weather for a prolonged time without starting, both batteries may be depleted of charge. If functions on your RV, like internal lights or the water pump, are not functioning, then the deep cycle battery is probably at fault. If your RV is not starting and functions such as the gauges or radio are not turning on when the key is turned in the ignition, there is probably an issue with the chassis battery. Motorhome style RVs will have one regular car/truck battery, usually referred to as the “Chassis battery,” as well as a deep cycle 12-volt marine battery, sometimes called a “house battery”. For me, the solution was as simple as buying a battery charger and using that instead. When I bought my vintage motorhome, I had to replace both batteries only to find out the electrical converter did not work. However, the issue could be caused by other parts of the Rv’s electrical system functioning incorrectly. If your RV battery is not working the most likely scenario is that it is a dead battery at the end of its lifecycle and ready to be replaced. If you’re certain that the battery is of good quality, but it is still being drained, there could be another issue like a bad converter or a power drain somewhere. If your RV battery does not hold a charge at all it is probably past its expiration date or has been damaged. Motorhome RVs usually have two separate batteries, a chassis, and a house battery, which will cause different symptoms from one another. Whether your RV Battery is not holding a charge at all or is draining quicker than it should is an issue that definitely will not go away on its own. An RV battery that drains quickly or doesn’t hold a charge can become a stressful chore, but does it need replacing, or is there another issue that may be fixed?
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