This Duravolt panel is great. It magnetically sticks directly to the fifth wheel box like in the picture. After that it doesn't move anymore. It's quite a hassle to get it back. The panel is semi-flexible. And it must be very durable. But mostly it works. My RV's battery died in a warehouse after about 2 weeks. I've added this solar panel and my batter ALWAYS gets down to a minimum of 12.8 volts. Often more. I checked the voltage coming out of the solar panel directly when it was not connected to the battery and it was over 13 volts. When I installed the solar panel the battery was sitting for almost two weeks and was probably pretty dead. That was before I installed the battery monitor. When I came back two days later to install the battery monitor, the battery was charged. I'm not an electrician. I didn't keep battery voltage logs. But this panel does what it should. I've had it on my fifth wheel for a few months now. with maybe 4 long rides. And the solar panel hasn't moved and continues to charge as it should. Keep in mind this is not for dry camping or boon docking. This is only for charging the battery while the camper is in storage. A great investment in my opinion.
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