4/10/2023 0 Comments Battery monitor rvtesting the battery with my multimeter as the battery drained. Spent time in the camper during the weekend in my driveway like I was camping. When mine hits the L light I am at 11.9 volts or so. I use my monitor and check in the morning when nothing has been running and lights off etc. If i am running a lot of stuff it can drop down tto the L (low)light. The monitor is only accurate with no load. Verify your converter is charging at 14.2+ volts (at fuse panel) to minimize run time. LED lighting was a huge improvement on voltage and effective battery capacity. Especially if the furnace was to run overnight and we are not leaving in the morning. 2 under light load and I would run the generator when voltage was dropping close to 12.2 12.0 zone. With solar the voltage sits at 13.4 most of the day.īefore solar yes the voltage would drop about. As remember in the Lance I was happy with an AM reading in the 12.2v range during the summer and the 12v range when the furnace was operating. My previous rig was a Lance TC that had a battery monitor as std eqpt. I have a full monitor in the current rig that's part of the solar panel setup. '71 Starcraft Wanderstar - The Cowboy/Hilton The question is kind of unanswerable since battery bank size has a lot to do with how much drop is comfortable.ĭoes your panel have just lights or do you have a battery monitor? '91 F350 Dually 2WD CC 7.5L (76K Original miles!)ĪirLift Bags, Reese Titan hitch, Rancho 9000X Now what do you read on the panel if your battery is in good condition? When would you start to feel its time to recharge with the generator? How about during winter with the furnace running? perhaps a fan or 2 is running and it's evening so you have a couple of lights on. A few things are running on you 12v circuit such as your CO monitor, the circuit board in the reefer, etc. My question is: "What readings do you see on you panel with a moderate load?" Ok, there are graphs galore that show open circuit voltages for condition vs voltage. Topic: I know, a full battery reads 12.8 open circuit but. You will need something better to get a measurement of your battery bank’s remaining capacity.RV.Net Open Roads Forum: I know, a full battery reads 12.8 open circuit but. When you charge with the Convertor or Solar the battery voltage will be artificially elevated making it harder to know how your battery is doing. Lithium batteries do not sag nearly as much as lead acid batteries. The reason why it is hard to know the SOC of the battery is because when you discharge with heavy loads like a microwave or coffee pot the battery voltage will sag with the load. The standard battery gauge that most RV manufacturers equip their coaches and trailers with, the kind with three or four LED “idiot” lights, will never let you know the actual SOC of your battery. I’ve helped many RVers that did not include a battery monitor, and therefore damaged their batteries past usability within the first year! More info on How far to discharge your Lead Acid RV batteries? Knowing your battery bank’s State of Charge (SOC) is important so that you do not drain your battery too much and shorten its life. Would you drive your car without a fuel Gauge? You do not need a Battery Monitor, but the “idot lights” will not let you know how full your battery is.
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