MPPT solar charge controller recommendation?
So I've got some cash now to put into my new to me Lance, and I've decided to build my own 200watt system from scratch rather than purchase an all inclusive kit. I'm going to use cross bar roof rack i...
Forum Discussion
Jfet wrote:
I tend to agree that PWM is better for systems close to the battery voltage. With 200 watts of 20V panels, I would probably go with a PWM controller for the price and lower tare. With our 1100 watts of 60V panels into a 24V battery, there was no question, MPPT all the way.
I think even MidNite is making a PWM controller soon, and they only make top notch stuff. I do like the MidNite Kid 30 amp MPPT controller because the tare is only around 6 watts and the conversion efficiency is in the high 90s.
My panels are only 17.7v and the MPPT controller gives me roughly 25% more current into the batteries than the panels supply. A 20v panel is going to provide that much more charging current. IMHO anything above ~16v from the panel makes MPPT worthwhile.
