Thursday, June 12, 2014

Solar Battery Charger

The batteries in the RV are dead.  Flat.  All three, including the starting battery.  There is a switch to isolate the starting battery from the house batteries, but its defective.  The only thing using power in the RV was the refrigerator.  Even though it was running on gas, there must be a 12 volt cooling fan in there or something.

I intended to start my diesel generator to run the battery charger, but there is an issue with that.  After a few minutes, it stops generating power.

A few days ago, I ordered a solar battery charger off  It arrived this afternoon.  It was cloudy and lightly raining, but I decided to hook it up anyway.  It immediately started generating power and charging the batteries, even though there was no sign of the sun anywhere.  I couldn't even see a bright spot in the sky where it was supposed to be.

Especially since our cabin will be small and three season,  I'm going to power it with solar, for sure.  We'll use propane for the stove, hot water, refrigerator, and dryer.  We'll use generator electricity for heavy loads, like a washing machine.  Anyone know the power draw of a deep well pump?   Anything I'm forgetting?

1 comment:

  1. As couple thoughts: -you don't need to buy a dryer; you've already got a solar dryer on site. -a deep well is the only thing our son always needs a generator for (other than for a string of cloudy days). His original pump burned out and he replaced it with a Grundfas; he pumps it into a cistern and pumps water on the sunnier days.

    Peter says a deep well pump usually is 220 volts, probably 6-12 amps, (depending on HP), but a lot more on startup and if very deep--even more amps. If 110 volts, it'll draw twice as many amps. The pump was the biggest challenge for his system. You should wire in a couple of DC outlets, as they will use less juice. His refrigerator, freezer and little cistern water pump all run from DC.