Solar Cynergy Panels
I'm looking at these panels which seem to be a really good deal at $144 a piece. http://www.solarblvd.com/p2711/Two-Solar-Cynergy-140-Watt-12-Volt-Solar-Panels-with-Y-Connector/product_info.html Bu...
Forum Discussion
Ken, thanks for the explanation. So shadowcatcher is right about that factor. I do wish the explanation came in amps instead of "power" though. I wonder how many amps you would get from a 230w panel in conditions where the 130w and PWM can't produce any at all.
You have to evaluate these things in AH haul since that is what the battery needs, so you need the amps figure to go with the time to get the AH figure. Then you can do the money thing to figure if that AH haul is "worth it" to you in your camping scenario.
Jim, I never noticed if the MPPT or PWM was on and the other off due to this question. They were at slightly different voltage set points when seen at the battery (not possible to get exactly the same with different wiring and calibrations) so whichever one had the higher voltage at the time when the batts were near full would do all the amps so that would eliminate any chance to note this other thing. (By then either set could supply all the amps the batts would take so it didn't matter which was doing it.)
Those days are over since I sold the 130w panel. Am down to the basic set of 230w/Eco-W you demonstrated back when. Very neat package, performing well. (stuck in the 15s though, no 16s for amps except with cloud effect) Thanks for posting about it.
You have to evaluate these things in AH haul since that is what the battery needs, so you need the amps figure to go with the time to get the AH figure. Then you can do the money thing to figure if that AH haul is "worth it" to you in your camping scenario.
Jim, I never noticed if the MPPT or PWM was on and the other off due to this question. They were at slightly different voltage set points when seen at the battery (not possible to get exactly the same with different wiring and calibrations) so whichever one had the higher voltage at the time when the batts were near full would do all the amps so that would eliminate any chance to note this other thing. (By then either set could supply all the amps the batts would take so it didn't matter which was doing it.)
Those days are over since I sold the 130w panel. Am down to the basic set of 230w/Eco-W you demonstrated back when. Very neat package, performing well. (stuck in the 15s though, no 16s for amps except with cloud effect) Thanks for posting about it.
