Hi Dave and welcome (I see this is your first post) Thanks for the heads up, too bad you had to go through the trouble of replacing your panels but it sounds like your on the right track now. Can you tell us what the output was from the panels when you first installed them? I'm also interested in where and how you are measuring the output? When you say you saw 15v, was that out of the panels and into the controller, or was that the output of the controller? If it's the output of the panels, directly, are they connected in series or parallel? As for the amps you see, the state of charge of your batteries will make a big difference in charge rate, with discharged batteries accepting a higher current than nearly full ones, so I assume you were seeing a low charge rate with discharged batteries? If you haven't seen it, there is another discussion of solar panel output here
http://www.sportsmobileforum.com/for...els-17354.html
I've felt all along that there may be an issue with the output of my Renogy 100w panels, but after researching the amount of losses due to heat, wire size, and controller's, I now think I may be closer to normal. Still, several folks report better output than what I get. Are your panels Mono or Poly? (I'm not sure what HQST stands for)
Again, welcome to the discussion, I look forward to hearing how yours hold up.