Is anyone a whiz at off-grid solar? I've done some research for a build this winter. I would love for folks to poke holes in my concept. I am still a bit overwhelmed by the options that are out there.
Configurable duck/chicken tractor
Solar Panel: HQST 100 Watt 12 Volt - Powers water heater (60 watts), predator light (20 watts), electric fence for corn/melons?
Charge controller: 20A 12V/24V
Inverter: HQST 500 Watt
Battery: Expert power 12 Volt 20Ah rechargeable
20Ah is tiny. Do the math on a 60W heater and a couple cloudy cold days and you will see. I use a 115 Ah battery on my trailer with no water heater and no lights (just runs the electronet and the auto door) and if I have a wet rain and lots of ground contact sometimes I need to change batteries (I have a solar charging station that doen not move wit the brds) I have to change it out every three days. I had a 20Ah setup before and the winters were a constant stream of batteries getting manually recharged- on only one net section. Now I use 4-6 100' sections on the big batteries. They charge in 2-3 sunny days with a 100w panel, and with normal weather I only change them every 2 weeks. I expect your water heater would require two full size batteries (drawing 60W 24 hours a day vs 100W production 6 hrs a day?) so would need power management to keep from running all the time. My fence is 1.2 joules and only has a couple milliseconds of charge per second. I would guess my battery rundown with this setup is < 5 Watts. So the water heater >>> than the fence.
Standing on the shoulders of giants. Giants with dirt under their nails
Yeah, but how did the squirrel get in there? Was it because of the tiny ad?
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