30A or 40A controller?
I’m going to mount 2 160w panels rated at 9.5 isc amps to feed 2 6v batteries…260ah. If I were to mount a 3rd panel I’m still under 30amps so a 30 amp controller should work fine….or should it. I’ve ...
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pianotuna wrote:
Hi Joel_T, There is no need for an MPPT controller with a small wattage nominal 12 volt panel system. It is an unnecessary expense. Put your money into another panel instead.
I don't ignore it....I hear a LOT of that from those of you in the know. I do also hear about MPPT working shaded conditions a "little" better and also "possibly" getting a few more amps to the batteries in some situations. The only PWM I'm considering is the Trimetric 30A controller that links with the Trimetric 2030 monitor. It's about $130. The 30A MPPT BlueSky 3000i is about $300. The 30A MPPT Tristar is about $400. The 160W panels I'm leaning heavy towards are about $300ea. Presuming I don't need to go to a 40A controller it's "only" $170 more to go from an PWM controller to the MPPT BlueSky. It's not "all" about money but I do want a return for my dollar. Because of my tiny brain when it comes to in depth electronics I've only tiny clues about the gains I might, or might not get from using MPPT instead of PWM. I do appreciate opinion.
EDIT.........panels are $300 not $400
