Solar Panels...
I am very interested in Solar panels for my trailer but not sure about how much is needed. Seems like different sources state different amounts of wattage is needed. My trailer has the usual constan...
Forum Discussion
Two batteries.... maybe about 200 watts. More in winter less in summer.
PWM = Controller using Pulse Width Modulation method of voltage control basically clips the 17 to 22 volts present on a nominal 12v panel down to proper charging voltage. Use with 12v panels only. Low cost option.
MPPT = Controller using Maximum Power Point Tracking is a sophisticated method to extract every watt from the panel by converting voltage into more amps vs just clipping voltage. These can be used with 12 volt, 24 volt and higher panel ratings. More money at about $200 minimum.
Batteries actually prefer the voltage to be adjusted with change in temperature. The better controllers provide this function.
Better controllers also have adjustable charging voltage to better match your charging specs.
Don't go too crazy with all this. Just get some 12v panels and controller and mount them up. It will work well.
Forum Members Solar Installations With Pics
PWM = Controller using Pulse Width Modulation method of voltage control basically clips the 17 to 22 volts present on a nominal 12v panel down to proper charging voltage. Use with 12v panels only. Low cost option.
MPPT = Controller using Maximum Power Point Tracking is a sophisticated method to extract every watt from the panel by converting voltage into more amps vs just clipping voltage. These can be used with 12 volt, 24 volt and higher panel ratings. More money at about $200 minimum.
Batteries actually prefer the voltage to be adjusted with change in temperature. The better controllers provide this function.
Better controllers also have adjustable charging voltage to better match your charging specs.
Don't go too crazy with all this. Just get some 12v panels and controller and mount them up. It will work well.
Forum Members Solar Installations With Pics
