Solar Panel Testing! ET Solar VS ReneSola

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[@WillProwse]

Usually, most panels produce 80-90% of their rated STC output. PTC is the real world output, but most panels do not list that. So I use STC. I use total Wh production over the course of a day to compare panels long term. Because various types of cells and film produce more or less depending on temperature and other factors. Figured this was a given, but some people in the comments section do not understand this. ~~~~~~~~~~~~~~~~~~~~~~~~~ Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link): amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509 ~~~~~~~~~~~~~~~~~~~~~~~~~ My solar equipment recommendations (Constantly updated! Check here first): 12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html ~~~~~~~~~~~~~~~~~~~~~~~~~~ My Favorite Online Stores for DIY Solar and Coupon Codes: -Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp -Signature Solar: Cheap Server Rack Batteries and Large Solar Panels: www.signaturesolar.com/?ref=h-cvbzfahsek -Ecoflow Delta Official Site: My favorite plug-n-play solar generator: us.ecoflow.com/?aff=7 -AmpereTime: Cheapest 12V batteries around: amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek -Rich Solar: Mega site and cheaper prices than renogy! Check them out: richsolar.com/?ref=h-cvbzfahsek -Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out: shopsolarkits.com/?ref=will-p -Battery Hookup: Cheap cell deals bit.ly/2mIxSqt 10% off code: diysolar -Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA: watts247.com/?wpam_id=3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Contact Information: I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: [e-mail] Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar FTC Disclosure Statement and Disclaimers: Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

[@richdobbs6595]

Sorry that this is off-topic, but I couldn't find a better video where to ask this question. Can Lithium Iron Phosphate batteries be installed in any orientation? Or do they need to be used with terminals on the top?

[@UnLikeU]

Poster how can a someone contact you Directly? I don't see an email or anything in your description.??

[@lifeguard434343]

So, you obviously have solar power production and collection dialed out there in Vegas, but have you ever given any thought into starting a “DIY Digging Wells 4 water with Will Prowse.” Cause the way Lake Mead is looking you might need to find your own supply of water. 😂. I’m in San Diego so I’m in the same boat. 🚤🚣

[@poetofthelight]

First, let me say I appreciate your informative and frank opinionated videos. Another unrelated question: Is it possible to do to poor weather conditions, use a charging station to recharge our solar bank batteries rather than use our automobile alternator as a backup? And If so, how?

[@markjohnson2278]

What do you do will all the stuff you get. Do you sell it? Give it away? I have started my solar powered work shop and would like to know if you have some stuff that you would be willing to part with some of your spare stuff.

[@richardpressinger3375]

Saw a guy with 1000 watts of solar on his van at Lowe's in North Carolina (I have 600 on mine). I stopped to say hi and he said they aren't yet connected and doesn't have the skills to hook panels to inverter, batteries, etc. I volunteered to help. He asked where I learned about this and I said - "CWP" - You know, - College of Will Prowse. Just my way of saying thanks to Will for helping us out and "passing it forward."

[@jongroom2954]

Nice of you mate. Watching and learning too.

[@MS-hd8yq]

I may never buy solar, but I still love watching, learning and being entertained by Will. 👍

[@better.better]

you should put some locking swivel casters on your panel stand so you can wheel it into the shade to swap the panels. also if you rotate those big panels to "landscape" orientation you could have fit two on there

[@TheNotoriousLove]

Thank you for this. I've watched you for quit a few years now. Your content has grown alot, but I still love anything you put out.

[@jasonbrown467]

as the great Michal Scott would say... thats what she said

[@teotwawki_je]

Open the cheap PV tester & see if there are any trim-pots so you could re-calibrate agains the the Victron.

[@OffGridGarageAustralia]

I had different results in my test with the solar panel multimeter. Mine seems to work quite well and has confirmed the previous tests with the MPPT charge controller setup. When buying used panels it is totally impractical to setup a battery and solar charge controller on-site just to test a few panels. The solar panel tester is a quick and very effective solution to check all panels in no time. It can quickly identify if panels work and can achieve the labelled output. If the tester is 100% accurate is not important at this point. It will help identify damaged or degraded cells quickly. The perfect solution for testing panels on the go.

[@WillProwse]

Yes good point I agree!!! Such a great tool for quick testing. Thanks for watching my video 😁👍

[@OffGridGarageAustralia]

@@WillProwse And thanks for watching mine 😉👍

[@googlinstuff8910]

I just dig how the Tesla casually appears in your videos. Dud I love it; you earned it and you have helped me a ton. Keep it going just like this!

[@Liferoad371]

I worked for a solar contractor for five years and you hit on so many good points.

[@marcangelodonelo5656]

Man I have to admit, this channel is so much educational than most colleges here in my country

[@rcinfla9017]

Normal individual cell processing produces cells with a distribution of performane variation and is result of slight silicon doping variance in manufacturing. Manf. sort the cells to groups of like performance cells for the same panel. This is why you often see same model variation grades with something like three to five grades with different wattage. They all will look physically the same, just grading (and therefore cost) on cells are difference. I use a DL24 load tester. You need to have a load tester with CV, adjustable constant voltage mode, which is like a variable high power zener diode load. For a little manual CV adjustment it allows you to easily get the different parameter of Isc, Voc, Imp and Vmp, along with the corresponding wattage. Running CV setting down below about 50% panel spec'd Voc gets you close to Isc reading. Running CV up til you get zero current is Voc. You can see the heating progression of panel in sun with Voc reading. Adjusting CV for maximum power reading is Vmp and Imp and you can likely manually adjust CV to max power as fast or faster then an MPPT controller finds maximum power point. Voc is most important indicator, followed by Isc and should be measured for any panel test. It also ensures you have enough panel overhead voltage to effectively run an MPPT controller for given battery voltage (should have at least 4v overhead). The quality of series resistance and shunt resistance of cells determine the MPPT point for given Voc and Isc. Normally for qood quality cells, I_mp is between 90-95% of I_sc and V_mp will be between 80-85% of Voc. Isc for good cells should be 40-45 mA/cm2, in full sun, per actual silicon cell area. Most common sized cells are from 156x156 mm wafer with rounded corners for about net 215 cm2 area per cell, yielding Isc of about 9 amps. Must not have any partial shading for these relationship to be true. Poor shunt resistance does not effect full sun performance but impacts low light performance. All cells have some shunt defects producing the shunt resistance so the less the defects the higher the quality of cell. Using one of these load tester also gives the additonal application of battery load testing that the dedicated panel testers do not have which makes the expense of the load tester more justified over just occational use of dedicated panel tester.

[@mollymark3019]

Thank you for all your hard work,some of your video help me on setting up my solar for our get away home Have 2400 watts of power an (8) 6 volt battery, it so nice not have to run a generator ,for power the AC or the wife breathing machine

[@glmaughan]

Move to Southern Colorado where it only gets in the high 90s. I just finished an install on my Sprinter with three 100 watt Rich cell panels feeding two Battleborn batteries in series for a 24VDC system.

[@adon8672]

Nice video Will. I'll suggest for fairer and more accurate comparisons, get a second victron controller, put the panels side by side at the same angle then test them simultaneously. You may then swap the controllers/panels to be cast iron sure but might not be necessary.

[@ladydavinci76]

Thank you so much. I'm still learning about solar. You are my teacher.

[@magnetmannenbannanen]

the shipping thing is really interesting, you should do a episode called "All in!" where you maximise wattage vs buy cost when shipping is added, and why thats a major factor in what you should build. in regards to break even point in time. the smaller your build the higher your shipping cost, right?

[@mortyrickerson6322]

I love this channel! Thanks for always sharing your knowledge with us these past 2 almost 3 years!

[@thepermaculturevagabond6161]

Uff happy I just purchased 2 320 watts Rene Sola panels for my van.

[@DIYwithBatteries]

I've got new solar bro 😃👍 I like your reviews as always.

[@guybrock837]

" I've been slacking",...young man no one can ever accuse you of being a slacker,...you are top SHELF Material. Thank you for all you do for us.

[@danielnicholls6868]

please test two bifacial panels at a time .. keep a little more vertical [ till they drop off a few watts] and step second panel back a panel width and up till no shade from first panel. then test separate. to see if you get more reflection from second panel to first panel. a good test to do. you need a w shaped reflector behind one bifacial to get best output. thanks for great tests.

[@Flash1857]

I see your doing the solar panel placement workout today 🤣 And thanks for the book and blog site, I have learned so much about solar

[@johnsmith-bo2cz]

Quality of panel is big. I got LG 395 watt panels and they do amazing. So happy I spent extra on them

[@marcarcher5426]

Hey Will, A very cool project would be a DIY, solar powered, ATV made from an old one. Either that or a DIY electric bike. No way can I afford even a used EV but maybe I can swing a DIY build. Will be boondock camping and need a secondary backup form of transportation that will fit in the bed of my F-150. Thanks for everything you've taught me,... pretty much everything!

[@jwrhynejr9608]

When will you do a video on using just the multimeter to test solar panels in used condition?? Any chance I missed it??

[@mikaeltrevik4139]

Off-grid-garage inspiration? You both are amazing

[@WillProwse]

I bought mine months ago, I was amazed he bought the same one. I didn't watch his video on this meter because I didn't want it to spoil me using mine. He has a great channel! I enjoy his videos. I want his battery capacity tester. That thing is sweet And thanks 😁👍

[@OffGridGarageAustralia]

@@WillProwse Thank you Will. Your feedback and comment is much appreciated.

[@kennethnwarache8562]

Most solar waffers around the 350w+ range are made from 5BB cells. The quality of each wafers matters. I love watching your videos BTW. Thanks for all you do.

[@paulnorberg3869]

Enthusiasm like this is contagious. Great job Will!!!

[@stevetobias4890]

Great review as always Will. Thanks for your time.

[@richardlutz5458]

Hi Will, If you will be using a multi-meter to test used panels, consider getting some extra leads and wire them in to an MC-4 connected and an MC-3 connector for the really old used panels. Having it soldered up and shrink wrapped will make it way more convenient so you are more likely to use it and you won't need a 3rd hand. Also I gotta say I almost skipped this video, but as always I learned something and enjoyed the content.

[@stagman4611]

I have bi-facials on my roof and the way there performing my system will pay for itself within 6 years. £12.500 17 panels and 16.4 kWh lipo batteries. Watched various videos before taking the leap and glad I did I now help others design there system

[@Liferoad371]

Nice video I live in the desert and have 3 solar systems and like you point out many solar panels do not perform well when hot. I have a ground mount system with Canadian solar panels and they are just marginal in the heat

[@lynnwebb4195]

Ooooh, I forgot to mention I am learning a TON from your videos and book. I like them very much, Now, if I could only learn to type

[@iainbrown4945]

another classic DIY solar video - please keep it rolling

[@Flamytygwa]

Yeah i'm also in Vegas and was outside all day working on the truck, it was a scorcher!

[@WillProwse]

Oh man, sorry to hear that. That was super hot

[@johnsparkman2007]

Will needs a couple of Ov gloves.. 😂

[@wiedapp]

I think the Chinese meters come in handy, when you build your system entirely from used panels, like Andy from the Off Grid Garage does. Even if they are not that accurate, they provide a good indication as to if the panels are still good or trash. And with their portability you can use them at the pick up place before you actually buy the panels.

[@recoblade1465]

Yes but like when you saw Andy get his panels they're normally already paid for by the time you can get around the testing

[@wiedapp]

@@recoblade1465 Well, when I go to buy something off of some platform equivalent to Craigslist (what Andy did and does), I don't pay before I actually had the chance to see the product in person. Except when the good condition is actually obvious from the ad description, the pictures and the communication with the seller beforehand. Used solar panels are a mixed bag, as we could see with Andy. So that are products where to pay up front can bite you in your a$$ royally. Okay, Andy got the majority of his panels for free, but it still took him time and a rental van to haul them home.

[@recoblade1465]

@@wiedapp I had never even contemplated using used panels. Have trust issues with Craigslist in the like but if I did I would rather you know do like wildy and get something like a Victron 75/15 and take some of the Headway cells I have and turn them into a 48 volt pack. And know that it's accurate for an extra $20. Although I would probably go with the 100 / 20 even though it's double the price due to the fact that that way I would have a testing station plus a solar charge controller more than capable of handling 620 Watts at 48 volts because I have 620 watts of solar right now. But that's just my opinion on the matter

[@egn83b]

Will in a future video, I want you to try doing a cardboard backing board on a large solar panel and see how far the output falls and do a control with the same cardboard backing board with a large 120mm pc fan for active cooling across the panel surface. Also when you get a conductor hot it loses it ability to carry current by a percentage while your wires are sitting in direct sunlight.

[@ReversePeople]

Thanks for all your hard work, Will! Your efforts are truly appreciated.

[@jwsolarusa]

Thanks for sharing these solar panels STC Rated test.

[@marcvivori1561]

Will I think 2 test stands would help immensely. Save time and physical effort.

[@klausnielsen1537]

Send those test meters to Big Clive's channel and he will tear them apart and analyze their innards to find out why they are so inaccurate. Great video! Good info and dont get sunburn.

[@jay-rus4437]

You will just have to get a multi panel test setup. Line up about 3 or 4 of those stands

[@Nick-im3sm]

It's crazy how big those panels are haha! Makes you look like a small child 🤣 ..I'm continuously impressed by those sunpower cells though. Though they are big money, Having that reliability factor of being able to pull at or close to rated capacity is very important to my trailer build.

[@williamvaughan1218]

I have one of these and they are great for comparing multiple used panels

[@justdoityourself7134]

Will's videos always make me happy... IDK why!

[@VegasGuy89183]

I love all your videos for the knowledge they impart. A video on mono vs poly would be very interesting to me. I always thought monos were better.

[@scottiecouvillon6587]

Great video as usual. Thank you for all of the information and help in my solar education. I was about to jump on some of the $50 panels you reviewed but I saw. They are recommended for off grid only. I am planning on going with a grid tie system in two years. Can you explain the difference in panels for off grid and grid tie systems? I appreciate you sharing your knowledge.

[@josephbrabenderiii2049]

I asked Santan solar that question and they explained. The used panels will have the UL (or equivalent) label removed. The regulating authorities will not approve a grid tie system that does not have listed components (if they bother to climb up on your roof).

[@scottiecouvillon6587]

Thanks. That makes a difference

[@Andy-df5fj]

It's probably like what is done by computer chip manufacturers (at least used to be). They would produce batches of identical chips and test them. Some performed better than others and they would sell the lower performing ones under a different classification. In this case, they sold the lower performing ones to another brand name.

[@honeybadger6127]

I've been getting used panels (with the white vinal film cracked on the back) from santansolar on ebay.. been getting them for 10-20 cents/watt (that includes shipping and taxes and purchasing 20 at a time).. yes. the white film is cracked off the back.. but they output 80-90% of rated wattage.. I mount them on the ground and it gets VERY wet here in louisiana.. no problems for almost a year now. For a dry arid place.. they would probably work VERY well for you.

[@rogerhargreaves2272]

Will, your channel is the best. Better than all the rest. Rog from Wales. We have a sunny day today. 😀🔆🔆🔆

[@james10739]

Those are some great prices for new panels

[@Jkauppa]

solar heat trapping while solar panel is inside the heat house, like under the transparent roof, like a green house

[@neliosamch3195]

Yes, nobody need those testers because you can see the output on the solar controller more accurately. I have 10 Canadian solar, 10 Trina 72 cells, 400w each and the output depend of cloudiness, temperature or degradation, however, in some lighting conditions one brand can output more than the other and vice versa and sometimes the output is more than the stated ratings on the 41st parallel north.

[@ColinAskins]

Knowing that Heat causes performance loss... Have you ever made a cooling enclosure for your panels with small exhaust fans to keep them cool?

[@__WJK__]

Panel cooling is one of those topics that nearly everyone wants to solve when they're getting into solar (myself included) but the added cost, increased power consumption and added hassle, are typically not worth the limited gains. The only exception, where it "might" make sense, would be to add cooling to a giant solar farm(?)

[@onecrazywheel]

@@__WJK__ I have a 2500 watt system on our roof with 11 panels installed in 2009. I have thought of putting a fan sprayer from a garden hose on a timer on the roof to cool the panels down every 10-15 minutes or so just for a quick minute of spray or less. It is something I have thought but never been too compelled to do. I know when I am washing the solar panels I call down to my wife off the roof to have her read me the wattage on our inverter in real time and me spaying the solar panels is amazing in full sun in Central Florida especially in summer heat. Plus it would keep them extremely clean too. I do wash them every few weeks or more in the pollen season.

[@__WJK__]

@@onecrazywheel - Hmm, an ultra simple misting system seems like a really good idea actually.

[@onecrazywheel]

@@__WJK__ Yes and on a timer. I saw a video on YT of a guy who made one for his roof in India like this to keep his house cool and it worked really good

[@ebb2421]

need another solar frame for side-by-side comparisons

[@GiesbertNijhuis]

you need a double(or more) test stand

[@ZzHasbrozZ]

Is testing a cold solar panel the same as comparing the whiteness of unused toilet paper?

[@benderue8982]

Please make a video on how to test with a multimeter.

[@oshavlfarms7239]

I was legitimately looking at these two panels considering which to buy when I found this. It really does seem like binning as others have mentioned. Rene taking higher bins than ET but ET claiming higher than it's bin.

[@francinebanks7144]

Just Subbed 🤗 Love your content Blessings 💯

[@Moses.m]

Good job reviewing.Still waiting for meritsun lithium phosphate batteries.Thanks

[@BubbaWarbucks]

Have you done a video rating panels in terms of cost efficiency versus energy efficiency? If I can generate 3400 watts for $1500 vs say 2500 to 3000 for the same price, shouldn't that also be a buying consideration?

[@jgren4048]

I think you are halfway right, there should be both types of ratings. It depends on what the greater consideration is, rack space/cost or sq foot wattage vs price wattage

[@BubbaWarbucks]

@@jgren4048 Yeah, I thought about that too after I posted, it's a very good point

[@MM-sf3rl]

It would be interesting to put a thermal-contact temperature probe on the panels to see how much heat contributes to performance.

[@bernardthedisappointedowl6938]

It's really hot, and yet you're wearing all dark clothes Will? You must be baking in that heat! Discover the joy of light coloured clothes in the sun to reflect most of that energy! ^oo^

[@__WJK__]

Was thinking same... definitely not the day to be wearing all black, especially when hang'n out in the Sun.

[@kimmer6]

Will can't. He's solar powered.

[@bernardthedisappointedowl6938]

@@kimmer6 Ha - I like your theory, ^oo^

[@StarboardBow]

For sure. Hey I have a 300 watt dokia and the cheap controller does not seem to be accurate. Can you suggest a controller for me.

[@tkermi]

Something like AE Solar's panels have up to 7 different power level bins 5W apart for exactly the same model. So it's not at all uncommon.

[@MrBrelindm]

Putting that panel test jig through its paces! Good points on crate shipping costs too. Nothing gets to market for free! Truckers gotta earn a living too (you listening Elon?).

[@osuperduke1]

Why not open and calibrate those units by using your victron as the source for calibrating? I'm sure there is an adjustment pot on those, give it a shot.

[@pranavan5803]

hi will. for about 100$ there are Chinese panels which power is insane compare to these. I have JA solar with 535 watts of output and 20.5 efficient. there's a lot of brands from Chinese with similar outputs. jinko, kaco , rec solar, risen solar, yingli solar. these are some of the Chinese manufactures. so if you can do a test with them it would be great.

[@backwoodsbungalow9674]

It would be interesting if you could use one panel as an ongoing reference. You could then compare each panel you test to the reference panel to see how output compares in the light and heat conditions at the time. 🤔

[@WillProwse]

That's exactly what I did. The eclipse panel is my usual reference.

[@WhenthePipersPlay]

FYI, the link to the 325W Poly is giving a 404 error. Great vid, btw.

[@WillProwse]

Thanks

[@benderue8982]

They both must have sold out.

[@brettneindorf373]

Maybe if making your own system it might pay to add some sort of heat sink to the back of the solar panels.❄

[@__WJK__]

Panel cooling is one of those topics that nearly everyone wants to solve when they're getting into solar (myself included) but the added cost, increased power consumption and added hassle, are typically not worth the limited gains. The only exception, where cooling "might" payoff, would be on a giant solar farm(?)

[@billbraun6846]

You got a pretty good workout repeatedly lifting those panels.

[@joybajza7751]

I really appreciate your content. You are a terrific teacher ❤

[@getlosttoday4045]

Thoughts on amorphous panels Will?

[@DOCSAFETUBE]

Great review brother thank you for letting us know

[@HariPLTS]

Great review and nice solar cell

[@your2nd]

I would like you to test the new hqst 9 bus bar 100w panel. At 74.00 each maybe a good chose for those building smaller systems.

[@stevebarrett8544]

Well done mate.

[@careyjohnson1784]

Thank you for video and just to let you know your video was great your sound system was great you got a good hook up system very clear

[@titanpreparedness]

Great information. Good test

[@stevenc22]

Just installed 2 ET solar panels. Did cost $500 shipped but that is still $250 per 350w panel which is reasonable.

[@kellycarney8485]

Have you ever tried build a floating solar array? I am in the process of transitioning to a sailboat and want to be able to have AC while at anchor and not have a boat that looks like Dr Suess designed the solar panel system. 5 x 150w on a 12x6 non towable floating mat deployed at anchor to run a less than 10k btu system maybe?

[@Wrenchen-with-Darren]

Well done sir.👍

[@Ardyen317]

Will can function at 110% capacity by wearing all black in the Las Vegas direct sunlight!

[@cuteone1702]

Great job from the Sultan of Solar

[@BrazzaB1]

Like Will said, the meter's OK if you are sorting panels, but not for installers - they will have an expensive meter $$$ Plus Andy from that 'other' solar KZbin channel (Off-Grid Garage) uses a different meter - after he used this meter.

[@pierreaucoin2480]

I know it is rarely cloudy in Vegas but it would be interesting to see what kind of power you get without great sun. Poly vs mono.

[@lahoriravian4610]

Only the Gravitational Technology is the best to solve all problems of Energy .

[@captaincaveman00]

Hey Will are they the same one Andy from off grid garrarge just got not long ago ? It seemed to help out Andy with some testing of his panels. Thanks for your efforts great video to watch as usual.

[@billysatkowski6938]

Can u do a video on a small system with max output ratings for daytime use only? Say, 600w continuous, 3000w inverter and how ever many batteries to run 12 hours.

[@politicalfoolishness7491]

Watching this video and the tune "Just walk away Renee" is going through my head. Rene walked away with it. :) LOL

[@stevevelobahn1814]

You know nothing! NOTHING!

[@politicalfoolishness7491]

@@stevevelobahn1814 LOL - you recognized me :)

[@johnaugsburger6192]

Thanks

[@therealsparkman]

I'm not sure what the significance of bringing in panels that were cool to do testing to see if you can achieve a higher output performance? Seeing how these are going to be in the sun the entire time once they are installed, then I would hope that I would get full optimization from them. I would see if I could source panels locally and have them tested prior to purchasing. This way you get to see if they perform as outlined. I'd hate to buy on line, pay for shipping and end up being dissatisfied with their performance. What guarantees do you have? 1500 watt array = 1300 watts in reality. Not acceptable. JMO

[@briandavis9975]

Great test Will I love you video's buddy.

[@SolgerLemp]

Hey man have you tried jinko solar panels ? where i live there's only Chinese brands and this is the most popular, i was hoping you could do a review on this brand see if it's actually good or not

[@MarkMettler]

Will have you looked at the Sonnen Core 4.8, 10 kWh storage battery and the Eguana 5kw, 13kWh storage battery?

[@floydlacroix6957]

I always thought it was me I have 320 watt panels that put out more then my 400 watt panels so I think it may be poor connection between cells or cheep connections in side the box thanks for the test

[@alwaysrockn2009]

Excellent video!