Forum Discussion

MrWizard's avatar
MrWizard
Moderator
Jun 24, 2015

why don't Solar controller mfg/sellers use honest ratings

example most 30amp controllers are listed at 390w of panels and 40amp controllers at 500w of panels but we don't charge batteries at 12.0v we charge at 14v or higher 14v*30 amps 420w output, ...
time2roll's avatar
time2roll
Nomad
Jun 26, 2015
So just buy a controller without the strict panel wattage limit.
Read the entire manual before you click and buy.
Don't rely on the quick specifications sheet or marketing materials.
Usually I drop out of the discussion when the primary specification is the price.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,189 PostsLatest Activity: Jan 21, 2025