Forum Discussion

ktmrfs's avatar
ktmrfs
Explorer III
Oct 17, 2013

Answering some solar panel with MPPT controller ?

Here is some real world data on solar panels when used with a MPPT controller to answer some question I, BFL and others have. This report is focused on the questions we had regarding solar panel use...
BFL13's avatar
BFL13
Explorer II
Oct 17, 2013
harold1946 wrote:
My question is how were you able to maintain 70 degrees panel temperature throughout the testing?


He said 70F was ambient throughout and panels heated up right away so presume also maintained steady temp at 28C above ambient as he reported.

In my recent test of a panel, taking it out from the cool temp garage, it showed 37v Voc immediately, as rated, but very quickly that dropped to 36v as panel heated up. You could feel the glass was now warmer than it was at first. Happened fast.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,330 PostsLatest Activity: Oct 30, 2025