One of the main attractions of RVs (Recreational Vehicles) is the flexibility they give you. In theory you can drive anywhere you want, but often you are restricted to available camp sites because you need somewhere to recharge your batteries. Even if you use your batteries to power on-board appliances they will need recharging from time to time – usually more often than you had planned! And be warned, regularly draining a battery will shorten its life dramatically. But there is an option available that will give you the freedom of the road, and you can make it yourself easily and cheaply.
RVs can be fitted with gas generators, but these tend to be noisy and smelly. Nowadays it is quite common to fit a solar panel or two which will provide most if not all the power you need without damaging your battery, and these panels are very easy to make at home, even for the total novice. Your gas generator, if you have one, can then become a backup – much less wearing on the ears and pocket. Keep it for powering the lights at your next outdoor party!
Mobile solar panels can be easily stored if foldable, and they are usually quite light and easy to move. A single 4ft x 2 ft solar panel will generate about 75 to 100 watts, which is about equal to a pair of golf cart batteries. This would probably be enough for the average mid-size RV but it would depend, of course, on your own electrical needs. Most RVs use no more than 400 watts. The best advice is to start with one or two solar panels, and add more as and when you feel they are necessary. You can get more information about these portable solar generators here.
If you plan to use your RV regularly in hot weather, you will have one or two other things to consider. You will need a solar-powered battery charger with battery temperature compensation to prevent overcharging of, and damage to, your batteries. Also, solar panels on the roof of an RV can get very warm, which can lower their efficiency and can lead to a drop in voltage. Your solar panels will need to be rated at about 17 volts or higher to overcome this potential problem. Just keep these thoughts in mind when planning your RV’s solar panel system.
There is a good range of RV solar panel kits on the market but these tend to be very pricey. We thoroughly recommend making your own. It is easy and fun and well within the competence of every oxygen-breathing adult, even the ham-fisted ones! And you will save a packet compared with the bought variety. It is very sensible, however, to get professional advice and guidance as you plan and build your solar panel, otherwise you could end up with a system that does not work properly or even at all. Don’t worry, professional advice and step-by-step instructions are readily available if you know the right source, and only cost a few bucks. We believe this is a good investment.
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