ARTCATHY Report post Posted August 31, 2020 How and where do I check to see why my battery voltage keeps dropping Share this post Link to post Share on other sites
richard5933 Report post Posted August 31, 2020 Welcome to the FMCA forum. Could you provide a bit more information? Which batteries - house or chassis? While driving or while plugged in? How/when are you checking them? What kind of RV are we talking about (make/model/year)? Give us a bit more about what we're dealing with and I'm sure that you'll get lots of suggestions. Right now the question is way to broad to even begin to offer any advice. Share this post Link to post Share on other sites
ARTCATHY Report post Posted August 31, 2020 its on a camp trailer one 12 volt battery, after charging battery the voltage starts to drop within a few minutes. not sure what is draining battery. the refrigerator is on gas? Share this post Link to post Share on other sites
jleamont Report post Posted August 31, 2020 Here is a video of you have a volt meter. hook it up in place of the test light in the video. Let us know how much of a draw it reads. Share this post Link to post Share on other sites
richard5933 Report post Posted August 31, 2020 (edited) When you charge the battery, what is the final charge voltage? How long do you hold it at that level before disconnecting the charger? Is this a new(ish) battery or one that's been in use for a number of seasons? Have you checked the water level in the battery? If you disconnect the battery from everything, will it still lose voltage after sitting for a few hours? The fridge will still use some 12v power, even when on propane. The 12v is what runs the controls on it. Sorry for so many questions, but this information will really help narrow down the problem. Edited August 31, 2020 by richard5933 Share this post Link to post Share on other sites
manholt Report post Posted August 31, 2020 A dead cell will do that. Do you have acid battery or AGM? What runs on the battery? Share this post Link to post Share on other sites
