I have waited more than 3 months to write this as I needed reliable data to base my review on. In February 2020 I hooked up a DuraVolt fifth wheel and touring trailer solar panel (B&C class motorhome) with a 12 volt 8.3w magnetic battery to my fifth wheel. I opened up the junction box that connects my truck to the fifth wheel's electrical system and plugged in the solar panel. Panel directly to the 12 volt system so it constantly charges the batteries. My pin box is on the south side of the property where I keep it. Before installing the solar panel, I fully charged the batteries with a Honda alternator. I have two 12V deep cycle marine/RV batteries (27 series) that were installed in May 2016. After charging the batteries, I used my multimeter to measure the voltage. On February 10th, 2020 the system showed 13.39 volts. Here are the times, dates and voltages since then (and as you know we have a lot of cloudy days here in Oregon): 15:00 22/22/20 12.89v 12:20 2/25 12.87v 16:20 29.2. 12.67 V 12:33 3.3.20 12.78 V 15:30 7.3.20 12.40 V 14:45 8.3.20 12.73 At 15:45 22.3.20 12.80 Volt 13:40 31/ 31 /20 13.08 volts 16:30 12/4/20 12.77 volts recommended - keeps my batteries "charged".
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