Easyyokefilms
New Member
I have a 40A HQST MPPT charge controller with 2pcs of 300w solar panel. The maximum power I have gotten out of the two solar panels in very bright sunligt combined is 220W which is far from the 600w the panels are rated for. I had initially thought perhaps I had bought junk solar panels so I decided to switch to a more reputable brand. I recently purchased a single Jinko 550w panel, however in bright sunlight I am getting just 225W out of the Jinko panel too. So I am wondering, what could be going on exactly. My charge controller does not have any current limiting function that I would have said maybe the controller is limiting my outputs to 220w. Because the first array was giving me 220w as well. Now this 550w panel is also giving me just 225w leaving me to wonder what exactly I might be doing wrong. I am in a region with full sunlight, no cloud. What part of my system should I start my troubleshooting from please