- Apr 27, 2008
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I would agree a set up as you describe would be better, though difficult to install in my case.OK as you ask, but I promised I am really not having a pop at you, but we get asked about them daily. The suppliers intimate that they are an alternative to an installed system, which they are not, hence my statement that they don't do anything "properly"
A properly installed system will provide mains power to the vehicle when not on hook up, and will support a low amperage site supply by supplying a "mix of inverted power and site power" to avoid tripping the site and finding a grumpy warden to re-set it. Also, fully installed the output is fully protected with a RCD and MCB's to avoid the user being able to electrocute themselves. I don't know exactly what model you have but most that we have evaluated have absolutely no protection for the AC output.
If your on EHU you wouldn't need to charge it anyway.
Most are DC charged using a cigarette socket, the absolute maximum that this type of plug / socket arrangement can handle is 10amps, if your unit is in the garage its just about as far away as possible from the engine battery. The voltage drop must be horrific, we would using 40mm2 section cable to even think about such a distance. Using my set up as an example, I have a 120 amp Sterling buck boost DC - DC charger. I drive one hour from one overnight stop to another and potentially can charge my Lithium batteries, your system you would have to drive 12 hours, even if you could actually charge at 10 amps.
Solar, most of these systems refer to being a "solar generator" some laughably show people on top of mountains, with an array of folding solar panels whilst they flood social media about their day! However, you have solar panels installed and you have them wired to your garage so that you can connect them to your "jack of all trade" battery in a box. As you say three quick plugs and you can remove the box, leaving you with no solar charge whatsoever! OK you could then connect another regulator, but what a lot of faffing around! My set up I have three 175 watt solar panels that will automatically look after my leisure batteries and my engine battery 365 days a year without a moments thought or input on my part.
As would running an extension lead from the camper, but I agree that the portability is potentially useful, thinking primarily of kids camping in a tent or weekending in an unconverted van, which lets be honest is their intended use really.
So I was not saying that they are crap, far from it, but when asked the question is a properly installed set up better than a "Solar Generator" in a modern motorhome, the answer, in my opinion is an unequivocal yes.
Our particular use of the motorhome suits this arrangement as we tend to stay somewhere with ehu at least once every three days or so. Charging of the ecoflow will be mainly from ehu when we're on a site or CCP aire. The 12v is just a trickle top up, set to max of 4A.
If I was off grid more often I would need more solar anyway, just a single 150w panel at present.