question

phil-fouracre avatar image
phil-fouracre asked

PWM Controller

I think I’m slightly out of my depth looking through some of the discussions on here!!

I converted a camper a while ago and then decided to fit a ‘simple’ solar system

I installed one 100w panel and a 20amp Victron PWM controller which has worked well, but was planning to ‘improve’ the performance

I’ve now got a second identical panel to add, but, am slightly confused as I’ve been told that I can wire it in series or parallel!

I was told that the controller would allow this, but, is this correct if I wire in series and then have 24volts to it?

Any pointers would be very helpful

Many thanks

Phil


charge controller compatibility
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1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

From the manual:

1628755559286.png

With a PWM charge controller the panel voltage have to match the battery voltage.

If you switch to a MPPT charger you can wire the panels in series and benefit from a higher efficiency (up to 30% more).


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