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today we’re going to be testing these Dirt Cheap Santan solar panels for $39 240 WTS so let’s test them real quick it’s Utah pretty clear day for Utah a good way to test these to see if you have any bad solar panels is to test the open circuit voltage and then we’re going to test the current so reason these are so cheap is because these ones have little cracks on the back so usually they’re like $59 these are $39 but I’m just going to uh like paint these with some outdoor paint really you don’t need to do anything if you don’t want cuz they’re $39 pretty cheap here’s the frame in Santan solar also test these and let they’ll let you know if they’re faded or underperforming at all I always retest them just for a peace of mind though okay so we’re going to test the open circuit current and then we’re going to going to test the short circuit current but then we’re after we’re going to wire all these together and uh test the actual output wattage it’s good to test each panel as one bad panel could really reduce the output of the entire array okay 35.8 34.12 34.4 34.4 7 3426 34.1 3 okay so now I’m going to test the short circuit current so basically what you do is just plug them together like that and then you measure the amps 10.33 amps so it’s actually performing above the current amps on the back of the panel might be because there’s some sun reflecting some snow reflecting onto it maybe but that’s pretty good better than stated this is right at 10 amps coming out of this one 9 .75 or now it’s going down seven oh there’s some clouds coming darn it for clouds passing by right now it’s interesting how much clouds or smog will affect the output of your solar panels it’ll affect the amps but it won’t really affect the voltage I plan on getting a whole bunch of these cheap solar panels so I can have power even during cloudy days in the winter 9.4 9.47 9.8 the clouds is hard to get a really good consistent reading with the closed circuit current but let’s just hook all these together and then we really want to know how much power is coming out I’m just going to test the open circuit of all the panels together I’ve got two strings of three panels wired in series and both of those strings are wired in parallel 102 volts open circuit okay let’s plug it in so this is my growa all-in-one inverter charge controller it’ll be charging my 48v server rack battery I also did a video review of these two products so if you want to watch that I’ll leave a video link in the description should start charging the battery in just a second taking in 536 volts per Watts so it’s 1.44 kilow away array wow so that’s taking in uh uh 1.31 Kow it’s like uh 90% efficiency so that’s and these are not ideal testing conditions the sun’s kind of far on the horizon right now but that seems pretty good to me so that’s 1.31 KW for $156 that’s like that’s really good my opinion actually I’m just going to put my meter on here to verify 80 volts so let’s test the amps 17.1 amps so 80 * 17.1 so I got I got to be honest I did not buy these solar panels for $39 I bought them for $100 a piece from a guy off uh Facebook Marketplace who who bought them for $39 from sandan solar um I was happy to buy them for $100 and I even asked him if I can uh get them for cheaper like maybe 90 and he said no I’m getting like a ton of calls sell but I was really happy to buy them for $100 the only bad thing about buying them from Santan solar’s uh shipping is kind of expensive but you could also just sell them like that guy so it makes sense to buy a a whole pallet of them because they’re just cheaper that way so you can buy pette for $39 * 30 panels for a pallette that’s 17 uh or 1,170 plus shipping throw in some tax so it’s $620 that’s what it’ll cost you to get a pallet and then say you sell them for $15 it’s $15 a piece for1 then uh so you’re getting back $1,500 so really you could buy you could get 15 panels for the difference between this is so like $120 you could get 15 panels for 120 bucks but I hope you guys enjoy that this video If you guys uh if you also watch their website they have different panels that come through on stock in stock but they have a ton of them that are without the cracks in the back for like I think they’re like $59 but so guys one more thing you might want to consider so this is my RV I’m going to put six of those same size solar panels on my RV but because I don’t have a lot of space I think it might be worth it for me to buy a a newer solar panel that has more energy density output but I’m but I’m not quite sure what to do because Canadian Solar offers uh like a 300 watt outputting panel but I haven’t tested that panel and so there’s a lot of panels online um that state what their state their efficiency in ideal testing conditions but if I if I were to buy that panel and put it right next to my uh used solar panels out here they might produce the same amount of w Watts so I’m not quite sure what to do um yeah I’ve seen some reviews on YouTube of the Canadian Solar Panels but they don’t actually put them in the Sun and test them so that’s kind of pointless to me so I don’t know what to do with that but if I do buy those Canadian Solar Panels I’m definitely going to test them side by side with these used ones well thanks a lot for watching see you …