How fast would it take to use up charge in 12 volt battery in my scamp charging lap t - Page 4 - Fiberglass RV


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Old 02-17-2014, 01:20 PM   #43
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Name: Steve
Trailer: 2003 Casita 16' SD
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My ScanGage tells me I use 0.45 gallons per hour at idle, with a warmed up engine. My Honda EU1000i lasts from 4-6 hours per .6 gallons of gas. Worse case thatís 0.15 gallons per hour. Of course generators are expensive and if youíre going to be driving 3 or 4 hours anyhow itís not a good tradeoff.

Just noodling with the numbers for the fun of it, using 3 hours of idling to recharge, that would be 1.35 gallons of, say, $3.30 gas or $4.45 per charge event. A Honda EU1000i (all you need if all youíre doing is recharging the batteries) goes for about $800 at Wise. That would be 180 charges cycles to breakeven. That would be a payoff in 1 year if you charged every other day to as long as 3.5 years if you charged only once a week. Of course, those one a week charge cycles would use 156 gallons in the car while the generator would use about 23.4 gallons. That would be a savings of over $400 in gas each year (once a week charging) which makes the generator payoff that much quicker. But you have to shlep gas aroundÖ

Solar is cheaper still since you wouldnít have any gas expense. You would probably want to be sure to camp out with a clear view of the southern sky and in the shorter days of winter you might want to move the panels occasionally during the day to keep the panels optimally charging, or not, if you oversize the panels some.

You seem to be leaning towards solar which is fine. I donít see car charging as making much sense unless you travel a lot except that it has no particular initial expense.
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