I have been playing with solar
for a while now. Mostly on the land. One thing I have noticed is that there is no single
method that works. Mainly due to differences in equipment
I have a different configuration which works for me. I have cheap solar panels
in Parallel going into an MTTP controller,with their own battery
. Then another identical config with its own battery
I have added a high current
diode to the output of each battery output into a common positive rail. This means that the charger
only looks after its own battery.
In my case, reliability
was more important that squeezing that last milliamp out of a panel.
My original degree was in electronic engineering and reliability
was a habit.
Having access to different chargers, i did find that with the configuration I had worked just as well as using really expensive equipment
. Just using basic recordings, a $200 kit worked just as good as a $1000 dollar kit.
I am only running equipment and LED lighting
24/7. No cooking
or inverters involved.
When I had shading on a panel, the other systems just took over.
In effect, I cam lose two complete systems or have faults on something and the other two keep working.
I did notice a few solar systems had the regulator
stuck to the underside of the panel.
I moved the regulator
close to the Battery. From an engineering point of view, this is a must. The higher voltage from the panel meant smaller cable worked fine.
Sometimes, theoretical losses dont really make a practical difference.
My testing over 6 months was only for my config. I am also only running 5 x 120amp(12v) systems. Reliability would be about 500% higher than most other configs though.