We’re on the last day of our 14-day retreat at Mancos State Park. Our longest stay at a campground with no hookups, it has proven to be an excellent experiment in water, sewer and electrical usage.

As for water, we’ve used a bit over 100 gallons, all of which was hand carted in five-gallon jerry cans from a spigot located about 25 yards away. We fully filled the trailer’s 50-gallon freshwater on our arrival and topped it up twice more.
As for the “used” water, I’ve made four roundtrips pulling our sewer tote to the dump station – two carrying black water and two with gray. We’ll dump all our tanks directly into the dump station drain when we leave the campground tomorrow morning.
Last time we were at Mancos (a 13-day stay) we had the pair of anemic, lead-acid batteries that came with the trailer. Each was rated for 75 AH (amp hours). The general rule with batteries like these is to never let them go below 50% of capacity. With lights, water pump, furnace fan, computers and camera charging, we found that we were using over 40 AH daily.

That meant we had to fully recharge the batteries daily. We spent every second day stuck in camp moving solar panels around to keep the batteries happy. We even pulled out our generator (I hate generators) and ran that for a few hours one day trying to recharge the batteries.
Immediately after that trip, I installed a 200-AH lithium iron phosphate RV battery, a converter/charger specifically designed for lithium batteries and reset our solar controller for lithium charging. What a difference. A few hours of direct sunlight and our new battery was charged to 100% capacity.

Of course, that requires the sun to be out, which it was for the first 10 days of our stay. Then the rains came and for three solid days, we didn’t see the sun. Instead of kicking in 225+ watts of power into the solar controller, our combined trio of panels sucked in less than 10 watts from the leaden sky.

On the middle of the third day, our battery monitor indicated we had used over 140 AH of battery power. Our former batteries would have been virtually dead. The new lithium battery was still kicking out a comfortable 13 volts of power. We didn’t need to worry about dipping below the 50% threshold because that restriction doesn’t apply to lithium RV batteries.

Tomorrow morning, we move to Ridgway State Park where we will have an electrical hookup. With a nearby water spigot, we should be able to refill our freshwater tank with a hose. There’s no sewer, so we’ll still have to tote our “used” water down a long hill to the dump station. But with thirty-amps of 120-volt power feeding in, we won’t have to worry about battery charging and solar panel placement.
























