Too funny! They say if you oversize your array you get more amps in low light than if you had a smaller array. Gosh! Who knew! :) What has that got to do with fancy MPPTs? No idea.
Some have posted that MPPTs generally do better than PWM in the shoulder hours, but cannot show how that could be. Seems dubious to me. I have MPPT and PWM and see nothing along those lines. Perhaps somebody can explain that business better, then maybe I can find it.
However, here we have them showing just that for the shoulder hours but only by oversizing the array so it flat tops mid-day. The PWM will also get the higher shoulder hour amps from the bigger array ( of course) but also will do the full mid-day value because it lets the amps through. Of course it might overheat if the amps are too high for too long, so better get a higher amp PWM for that. Say $20 instead of $15 on eBay :)
The whole blurb seems like a lot of salesmen tap dancing for when you end up with a controller too small in amps to do the job. One thing that is useful info is how the AH haul from the shoulder hours is greater than the loss from clipping mid-day.
Also don't forget their other advice about oversizing the array. They warn you are just wasting your money since the controller will just clip the amps. Mena posted about that a while ago from their manual.
Then after all that they slide in that if you are camping in winter with the array tilted up the controller might overheat anyway so don't do that!
You really have to wonder what is going on there. Are there competing parties at the company, each putting out its own blurb?
