PWM vs MPPT Test Results
Today (blue sky, not quite to STC at this date at this latitude 49.3N but almost according to the calculator on that) I was able to run a test on my 230w panel and Eco-Worthy 20a MPPT controller. ...
Forum Discussion
I would make the price comparison between the 20a PWM controller for $20 and the Eco-W 20a MPPT for $102.
There is nothing wrong with those $20 PWM controllers either. They do Series, three stage charging profile exactly like the MorningStar's profile. In fact they have the exact same charging profile diagrams in their owner's manuals. ( I have tested those and so have other forum members.)
It gets tricky when the 12v panels cost more than the 24v panels but the MPPT controllers cost so much more. You have to really sharpen your pencil and keep your eye on the expected amps for the whole set-up.
There is nothing wrong with those $20 PWM controllers either. They do Series, three stage charging profile exactly like the MorningStar's profile. In fact they have the exact same charging profile diagrams in their owner's manuals. ( I have tested those and so have other forum members.)
It gets tricky when the 12v panels cost more than the 24v panels but the MPPT controllers cost so much more. You have to really sharpen your pencil and keep your eye on the expected amps for the whole set-up.
