![]() ![]() ![]() Connect the Red ring terminal to the Positive (+) battery terminal. It seems to be apparent getting to or below 50% discharge will shorten the flooded cell battery's life. 12 Volt Battery Monitor State of Charge Indicator 1. I've also been measuring SG so maybe this would be a more accurate way to go, but again the published values vary also. I've found charts that show 12.3vdc as being 50% discharged, where the above chart shows about 65%. I'm currently doing some experimenting with a new group 27 deep cycle battery and then recharging with my Honda EU2000i in preparation for a stay in a campground with no electric hookup, so this is of real interest to me. There seems to be a lot of variations in the charts to appraise the dc voltage and the percent of battery discharge. ![]() To check the status of a battery or battery bank with a meter.Ģ - Turn off 12v items such as lights and fans.ģ - wait 3-5 minutes before taking your voltage reading with the volt meter.Ĥ - Compare your measurement to a state of charge chart such as the one I'm attaching below for a 12v flooded lead/acid battery: The secret is you have to shut off the shore power to have an accurate battery reading and not be reading the output of the converter.īesides, a good volt meter should be in the kit anyway, right. Marine RV Battery Indicator Battery Monitor for Measuring Power Testing Accurate Work When charging, the current colour is green, when discharging, the. I looked in the manual and it states the button is to determine the auxiliary battery level. When I discovered the low voltage I went in and pressed the Battery level indicator and it was 4 lights showing a full charge. I checked the battery voltage with a meter and it was less than 10 volts because the battery switch had been shut off and the batteries will not charge with the switch off. Now I remember the first move I made, I went to pick up the levelers and the leveler control panel wouldn't come on. I went inside to check my tank levels and decided to press the Battery button for grins and all four lights lit up indicating a full charge. I discovered this while installing a bank of 4 Interstate SRM-24 batteries and had all batteries unattached (and shore power was on). ![]() It is attached to the Converter side of the battery switch and indicates the voltage output of the 110V to 12 V converter when the rig is plugged in. I just discovered the battery level monitor lights that you activate by pressing the battery button at the Convenience Center does not indicate the battery level on our beloved 3740BH-R when shore power is on. By displaying the charge percentage, battery monitors help keep you informed about your battery’s state of charge so that you know what actions you need to take.Applies to 2020 3740BH-R (.or a least the one I own LOL) That’s why battery monitors are important. That’s why manufacturers of laptops and phones, whose devices uses lithium batteries, recommend to not charge their devices to 100% to prolong their usable life.īut because standard 12v batteries do not come with a percentage charge display, it is too easy to ignore a battery’s current charge. These batteries do not like the be overcharged and kept at 100% for long periods of time. Lithium batteries are similar but in the opposite sense. The Victron Smart Shunt battery monitor is a compact module with the control unit and shunt combined. ECO-Worthy Upgraded 200A Touchable Display Battery Monitor with Hall Sensor, 0-100V Battery Meter with Program, Auto Detection,for 12V/24V/36V/48V Li-ion/LiFePO4/AGM/Gel Battery in RV/Solar System. That’s why it is recommended not to discharge an AGM battery past 50% The more you discharge AGM batteries, the fewer charge cycles and lifespan that battery has. Oftentimes, prematurely dead batteries occur because the user unknowingly over-discharged their AGM batteries. And many times, these batteries have died prematurely. If you have been doing van life long enough, you have almost certainly meet other camper van travelers who have had to deal with dead batteries. ![]()
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