Hi all, new member here.
We recently ordered (8) HQST-100D-SS panels directly from the https://hqsolarpower.com website. Here's what we got:
(5) Renogy RNG-100D-SS in somewhat battered boxes.
(3) HQST-100D-SS in similarly battered boxes.
I kind of think the boxes left the factory like that, but maybe FedEx did it. Boxes shipped individually and weren't all shipped on the same day even.
Ok, so here's the question. Since the panels are obviously physically different, and since I want to have all panels matched somewhat I checked a couple of each in broad hazy daylight to see what I'd get.
RNG-100D-SS: 2.7A short circuit current, 21.0 V open circuit voltage
HQST-100D-SS: 4.4A short circuit current, 22.9V open circuit voltage
In each test I oriented the panel for maximum output.
I realize (I'm an EE) that max power would be achieved somewhat between open and shorted load (OOV & OOC), but I have no easy way to load them like that right now.
Just on a first rough test, with somewhat faulty methodology, it sure seems like the HQST-100D-SS has the potential to outperform the RNG. (And based on price I'd have thought Renogy should be better)
I have a REALLY hard time believing that the Renogy unit would ever hit it's 4.85A or 5.28A currents (see below).
Both are supposed to be 100 W panels.
Any idea what's going on here? Since it would be easier to return 3 HQST and keep the REN (assuming HQST would do that), is there any reason to believe that the RNG units could actually perform as well as the HQST?
BTW
RGN sticker reads:
Max power 100W
OCV 21.6V
OOV 17.9V
OOC 5.72A
SCC 6.24A
HQST sticker reads:
Max power 100W
OCV 24.6V
OOV 20.6V
OOC 4.85A
SCC 5.28A
We recently ordered (8) HQST-100D-SS panels directly from the https://hqsolarpower.com website. Here's what we got:
(5) Renogy RNG-100D-SS in somewhat battered boxes.
(3) HQST-100D-SS in similarly battered boxes.
I kind of think the boxes left the factory like that, but maybe FedEx did it. Boxes shipped individually and weren't all shipped on the same day even.
Ok, so here's the question. Since the panels are obviously physically different, and since I want to have all panels matched somewhat I checked a couple of each in broad hazy daylight to see what I'd get.
RNG-100D-SS: 2.7A short circuit current, 21.0 V open circuit voltage
HQST-100D-SS: 4.4A short circuit current, 22.9V open circuit voltage
In each test I oriented the panel for maximum output.
I realize (I'm an EE) that max power would be achieved somewhat between open and shorted load (OOV & OOC), but I have no easy way to load them like that right now.
Just on a first rough test, with somewhat faulty methodology, it sure seems like the HQST-100D-SS has the potential to outperform the RNG. (And based on price I'd have thought Renogy should be better)
I have a REALLY hard time believing that the Renogy unit would ever hit it's 4.85A or 5.28A currents (see below).
Both are supposed to be 100 W panels.
Any idea what's going on here? Since it would be easier to return 3 HQST and keep the REN (assuming HQST would do that), is there any reason to believe that the RNG units could actually perform as well as the HQST?
BTW
RGN sticker reads:
Max power 100W
OCV 21.6V
OOV 17.9V
OOC 5.72A
SCC 6.24A
HQST sticker reads:
Max power 100W
OCV 24.6V
OOV 20.6V
OOC 4.85A
SCC 5.28A