MTTP does work.
I am in the process of installing 6 65W Kyocera panels
on the bimini
Two were installed for testing in December and I'm just getting
around to installing the other 4 panels.
I'm running the two panels in series to a Morningstar Sunsaver MPPT
controller, less than $250 at mavericksolar.com and other online
sellers. The controller is rated at 200 watts of solar and/or 15
amps output which is just right for 3 65W panels. I will use two
controllers with 3 panels on each controller. If one fails I'll
still have power.
65W panels are rated at 3.75A max at STC, standard test
conditions. Rated output is only seen due to cloud edge effect and
that's for short periods of time. 80% of max is rule
of thumb with
high sun and no shadows.
My Link 20 routinely shows 8.5 amps into the batteries at peak sun
from these two 65W panels and as much as 10 amps at times. That's
MPPT at work. I'm seeing 50 to 60AH into the batteries on a good
The Morningstar MPPT controller is the only small MPPT controller
on the market and its highly recommended for small installations
by a controller designer
that hangs out on the wind-sun.com discussion
board. Look for posts by 'solar guppy'. Lots of good solar info
on that discussion board.