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ewarnerusa's avatar
ewarnerusa
Nomad
Sep 13, 2016

SOLAR - Switch from PWM to MPPT, series vs parallel matter?

I put together a solar setup on our TT when we bought it new. I went with 2 x 140 watt 12V nominal panels in parallel and a PWM controller. Panel specs: Max Power: 140Wp Open Circuit Voltage (...
ewarnerusa's avatar
ewarnerusa
Nomad
Sep 13, 2016
You did comparisons for MPPT vs PWM, or series vs parallel with MPPT?
My estimate would be I could maybe get an additional 5 amps out of my setup if batteries were low and the sun was just right with MPPT vs my PWM. Not really enough to make me want to do it right now. But it also seems like an easy way to optimize my existing system.

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