No Battery Solar Power System: Growatt SPF 3000TL LVM-ES

[@soberpickle8195]

I bought one in April, just started hookup yesterday, (was waiting on all materials needed) and the positive battery lug broke off when I was loosening it. Thought I was screwed and then noticed wiring damage on communication card. Contacted the company, sent them a picture they wanted. 2 hours later got a text saying they are sending me a new unit and a packing slip to send the defective one back. Now that is service and look forward to doing more business with them in the future.

[@LithiumSolar]

I think the biggest issue I see with a battery-less system is stability of your solar. Even if your array is large enough, you just need a cloud to go by and it drops out lol. I agree on the still needing a small battery!

[@WillProwse]

Good point!!!

[@magamike1800]

I sell ebikes and have loads of 48V lithium batteries. i will use one or 2 as a buffer. they are 17AH so they have a fair amount of capacity.

[@neliosamch3195]

In the other hand, if the batteries suffer a catastrophic failure you stil can pump water to higher elevation, run the freezer and even the water heater which don't need a constant energy supply.

[@jschaeke]

I ran my EAsun aio a while (looks nearly identical to the mpp solar Will in the video replaced) without a battery. I noticed it had some safety to produce well below the solar pv wattage. As soon as I added the batteries the full potential of the solar array became available. There are some small cheap Lifepo4 cells with high C rating on Aliexpress, so I agree you need to add some of those to have the small buffer capacity.

[@fordfalcon1965]

Would be a good as a stand alone system to heat water maybe?

[@RobVollmar]

Great video! Your idea about creating discrete systems for discrete functions is something I've been thinking about quite a bit. By creating these large capacity, centralized power systems, we're really just recreating the existing grid on a smaller scale. Decentralization fosters resilience, which is something I think we're all seeking by learning about in pursuing solar-powered home-scale systems.

[@johnhufnagel]

I think like most ideas, discrete vs. centralized all comes down to the specific case. There's benefit to discrete, in terms of resiliency, but centralization makes switching between alternative sources for everything much simpler.

[@mikemotorbike4283]

too many variables with discrete, wayyyyyy too much work when there are all in ones. even installers make mistakes. You'd have to watch all of Wills videos twice to remember everything. And practice for a year, or take an elecro-mechanical technology course. And yes they employ the same principles and hardware as a utility grade infrastructure. (For that matter, so does a solar light.) Unless you're handy, I'd say just get 'er dun, buy a backup if you're worried, and learn as you go.

[@AskIveSolar]

An update to this video would be great. I was curious about clarity on terms like "small battery" like how small.

[@31337cyberhuman]

This is what Sol-Ark has been doing for a good long while. I have the 12k and did a DIY, and could have never done it all without learning from this channel!!!! I have learned a LOT from you!

[@richardreese5377]

Hello , How is that sol ark working? I was strongly considering that. But heard they were very finicky about balanced lines . And shut down because of it .

[@104teamster]

Let’s see: video published on April 13th, today it’s the 18; probably cant get one b/c it’s sold out after Will’s review. Key to getting rich fast: Have a huge stock of a product that Will is gonna give a positive review and you’ll sell all your stock. (LoL). All joking aside, it speaks volumes of your work. People trust you. Your videos are to the point, easy to understand and honest; with no fluff. I’m no electrician and you’ve helped me immensely on my own van build. Thank you, keep it up.

[@jameshughes131]

growatts are for sale not sold out, just got one yesterday

[@robertmyers4155]

I love learning from your KZbin videos! I am going to attempt setting up my system with two of these, Growatt 48V SPF 3000TL LVM - 3kW 120Vac Stackable Inverter 4.5kW MPPT Charge Controller Split Phase 120V/240V capable with two or more units. I ordered some lifepo4 batteries and I gotten some of these Lot of 2 Valence U-Charge RT Series U1-12RT LifePo4 Battery 12V 40Ah . I am going 48 votes after watching your KZbins I was convinced this would be a great start! Thanks for teaching me these important Growatt inverter information! Technology changes so fast it’s hard to figure out how to get the best bang for your bucks!

[@oneshot_onekill4618]

Is the ES a U.S version?

[@bettyyoung8402]

I love when you show actually working on the wiring....showing safety tips... I'm hoping to help a friend do solar in her short bus conversion

[@wasuremashita]

YOU MADE THE VIDEO I REQUESTED! Thanks Will! Thanks internet!

[@Spartan2x]

I’m so glad to find a guy who has the same definition as “fun” that I do 😂

[@happymack6605]

Thank you. I believe this Growatt is what I've been waiting for.

[@WillProwse]

Guess what! The LV6548 has the 'batteryless" feature as well. I had no clue. Thanks to my viewers for pointing that out. That's awesome! ~~~~~~~~~~~~~~~~~~~~~~~~~ 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

[@raybacchus1026]

Brother Will thanks for doing dis video ... so my question is what is array voltage for the LV6548 for the batteryless

[@paial]

Will, baterryless inverter is the perfect tool for your last video scenario. Just hook it up to the solar panels in the roof. (Disconnect it from the grid-tie inverter of course)

[@SetitesTechAdventures]

I was just about to hop in and comment about that. Glad to see you getting on this quickly. I have never given it much thought though as I assumed all inverters could be batteryless, but they'd be sucky. I like watching your videos because your commentary shows you are thinking. I was thinking of a small battery to handle the compressor kicking on. I use batteries with my 3d printers to lower the draw at the wall.

[@cclenergy3033]

I called Growatt China 2 months ago. The engineer said you need either battery or AC input (grid backup). You can’t run on PV alone. I have a 5kw version of this. Don’t waste your time on testing it without battery or grid support. Pls focus on battery only, and then with grid only.

[@zarbonida]

@@cclenergy3033 Right! Engineer said the same to me. Capacitors are going to be warm and they're burning without a battery or a grid

[@jmr]

I really like the possibility of running without a battery. There are some good use cases.

[@jmr]

@marthale7 There are a lot of applications that a cloud isn't a deal breaker like boilers, pumps, cooling, and heating.

[@jmr]

@marthale7 Motors can be tricky. I hear they aren't fond of impure sine waves either.

[@rasol136]

Mr. Prowse is akin to the Mr. Rodgers of our era. Keep up the great work on informing us of all the new solar/battery tech out there!

[@rianhamman6187]

Thanksk for the video - recently had an enquiry from a client who does not want to use batteries and only solar panels, this is a great way to save money on a setup without using a grid tied inverter, because we have a lot of rolling blackouts in South Africa. I love the Growatt Inverter range will def recommend this to him. I think using it along with grid input will work perfectly for this application when the solar array is not generating enough power it will draw from the grid while it is available if his solar array is not large enough.

[@steveforliberty7801]

I bought this model after watching this video but just sent it back to exchange for the 5000 model that outputs 240v. I can power my well with that one. It does not output 110 volt but a transformer will do the trick for that. Now time to find the right battery. I bought your book and am excited to learn more about electrical. Learning a lot from your vids. Thanks

[@oneshot_onekill4618]

The ES is a U.S model?

[@polywog9591]

Question: Is the Growatt 5000 still working for your well pump? I have a 1.5 HP 240V Single Phase well pump pumping from 200 feet down the shaft. Was wanting to know if this would work. Thank you.

[@ecospider5]

The growwatt with city power backup looks really cool. Allows a small building to run off solar but still work just fine in the winter without being grid tied.

[@thesurvivalist.]

It is nice to see these companies upping their game and producing better equipment for solar based systems!

[@YT-Observer]

its a good case for a super capacitor bank - there is a video here where a guy uses super/ultra capacitors as the storage bank and runs his power tools with them. in fact it might be good to have 2 arrays of caps one for each PV set so you could match that output

[@randacnam7321]

With supercapacitors, the useful capacity with an inverter like this is a fraction of total capacity. Energy density and cost aren't good either. LTO is better for this application.

[@kuzadupa185]

Would you please share link to the video or its title?

[@grim6980]

This is what I was looking for. Now I just have to buckle down and study to figure out what you were saying. A lot of that went over my head.

[@piejudge]

I am happy to see that you know the difference between OCPD and OCD. Props to you.

[@OblivionTechYT]

Can you please make a video on real time sharing of power between grid and solar while remaining off grid? I have seen videos of some inverters having this feature.

[@spearfishingmiami]

This channel will have 1M subs soon. Solid content.

[@system23]

This is great! I bought an 800 watt solar pump from RPS for our off grid permaculture property. The pump works so well I wondered if there was something like this I could install in the workshop that I could use on sunny days instead of spending a ton on batteries. I couldn’t find anything until I saw this. I’m in.

[@davelamont]

You always have good information on your channel. I've been watching for a long time. Keep up the great work.

[@smacospasovski5123]

I have ordered the 5000 please review that one also

[@acacia987]

what happens if you connect it to the grid, is it smart enough to use solar over grid and supplement when solar drops?

[@allalphazerobeta8643]

May I suggest going to harbor freight or amazon and buying some Composite Ratchets. They're pretty decent and they eliminate one of the biggest risks for short circuits when dealing with live battery terminals. Also, thanks for mentioning that you could use two to do split phase. I'm currently considering a smaller system for a trailer but would like to able to move it into a house at some point and get split phase.

[@WillProwse]

I have them in all sizes. But they were on other side of my property. And yes indeed. I was being careful.

[@WillProwse]

Yeah it would work great for that application

[@ThomasBomb45]

I see you can also use it in hybrid mode with grid input. Can you test hybrid mode without batteries? Does it use solar and grid simultaneously?

[@rmendes2mendes915]

If your getting enough voltage then voltage is not the problem, it’s amperage, you just don’t have enough amps to start the compressor. You said you needed 3000 watts to start the AC unit well at 120 volts you would have 25 amps. If the AC unit is running off line power it starts with a simple 15 amp circuit which would indicate it can start and run with only a 1800W power supply. So it doesn’t matter how many volts you have, you need at least 15 maybe 20 amps to start that thing.

[@WillProwse]

Indeed

[@WillProwse]

Just would prefer the voltage to be as high as possible. But yes indeed.

[@thefarmchannel188]

Hey Will!! Love the Videos. i have been looking to build an off grid system for a while now. i mostly need it in lower temp months just to keep the lights on (all LED of course) and run my well pump as necessary. the biggest hassle for me is trying to build and size a system for the summer months when i would absolutely need AC. i keep looking at the MPP (48V) all in ones, several 400w panels and at least 10kw of battery (your should for sure do a video on some of the different Alibaba power walls) but i always stop short because i just feel like i am missing something, and i get nervous ordering the power walls. anyway thanks for the content. as said i really enjoy it. thank about doing that power wall video.

[@TheSaltblock]

How do you test an array for working voltage before hooking up? Won't a multimeter only show open circuit voltage?

[@Davidslabofficial]

Battery less Solar Inverters are cool but down side is That you can't run Torque loads and other loads which requires Large current initially. And Also little shade on your PV array and the whole system shuts down. If you have The Ac input connected it will work great or a battery just to compensate the PV and keep the loads running Awesome video

[@theonlywoody2shoes]

Rather than using a (small) battery could you use a super-capacitor bank, similar to those used in car audio systems, to handle the brief surge load?

[@randacnam7321]

Energy density of supercapacitors is not good. A better solution would be a small lithium titanate battery, given the high charge cycle count it would have.

[@maroman556]

Please test its ability to blend grid power with solar. I know you can probably not mix them in your state but for a demo you could add another inverter to simulate the grid. The grid would make starting the heavier loads no problem.

[@Vlfkfnejisjejrjtjrie]

That model has the ability cutover to grid power if your solar panels can't keep up with what's being drawn from it, I believe. I think I saw this same model being demoed on another channel.

[@maroman556]

@@Vlfkfnejisjejrjtjrie Thanks I will look for it. Do you know if it combines the grid power ie if you have an 800 watt load but only have 400 solar avail it provides 400 from each?

[@jeanamog]

You are so talented, knowledgeable, loveable and etc. I started with your plantar fasciitis videos and I ended up here . Liked and subscribed. Thank you for your informative videos . Cheers from Toronto.

[@odirex]

"batteryless" setup would probably be great with a small supercapacitor bank for surges.

[@gibo1971]

Question? Growatt or mpp solar for off grid.

[@wordbear3r]

I'd say growatt

[@jameshughes131]

Growatt

[@2ndAveScents]

Either one as long as you get US based support from someone like Signature Solar.

[@jameshughes131]

@@2ndAveScents they helped me even though dig solar wasn't the company. Growatt support is non existent

[@DavidJJJ]

10:21, or just check the output voltage of your panels! This is a really cool product and perfect for off grid systems or a remote shed.

[@petercamusojr1545]

I really like this concept batteryless solar, so many things can be run during the day without the need of batteries. Like washing machines, water heaters, AC, dryers, even hot water floor heaters. Major cost reduction for solar applications if batteries are not needed. Super caps for transient loads instead of small batteries? Good video!

[@t.c.3027]

Very interesting, "a converter that doesn't need a battery" Thanks Will for info that's new to me!

[@tranerekt1731]

I love the excitement when it turns on!

[@barbaragriffin869]

I only understood one word in ten, but I enjoyed listening to you!

[@CosmicSeeker69]

I feel the same about You Barbara! x

[@evelyncastro1271]

I love your reviews. I have learned a lot from just watching your reviews. Thank you for articulating self-knowledge.

[@philipsgarage]

Love the videos! Would you be able to do a video showing how you wire your inverter to a subpanel with the AC output like you have setup?

[@loucinci3922]

It is so cool that you have all the parts on hand. You have done this so long and comes so easy for you. THANK YOU for sharing your knowledge. Cheers

[@jackiescrew1572]

Hi Will, love your blogs I consider your info to be extremely accurate and truthful thanks for that. I’m planing to hit the road in a year and a half once my trailer build is done. I’m planing on use this growatt for my 48v lithium 280ah bat bank with 4 410w bifacial panels you recommended and a 2000w wind turbine later to ad on. Now after watching this video I’m wondering if I’m on the right track, if you have any input I would be appreciate but I also understand if you chose not to comment. Keep up the great videos.

[@rdlspmg6752]

That's awesome it answered a bunch of questions I had about those inverters I was thinking about getting some but I want to run my house with solar as soon as I can get all the stuff together and I was thinking of getting a couple of those inverters but I don't think that 3000 watts is enough

[@edwardmorales1025]

Jja. Your are BRILLIANT Will. Do you do paid calls?

[@StartledPancake]

Hey Will, could you please check the vampire consumption of these inverters? The older voltronics need for @ 70w is a major downside, hopefully newer hybrid inverters are better in this regard.

[@Flash1857]

Man, you work harder now then ever. Thanks for the information and reviews

[@MUHerd37]

I hate that it needs 120v minimum. So basically if you have less than 10 panels it's useless even if you have a battery bank as well?

[@jackscrafts9202]

I wish I understood this before I bought the 48v 3000 ES. Says 120-250v range, but my 6-100W panels are not enough even though they are VMP 20.4 (VOC 24.3). Ordered 2 more hope it is enough to turn this sucker on.

[@MUHerd37]

@@jackscrafts9202 Hope it works for ya. Luckily I bought the Growatt that also uses a battery bank. Have had it for over a year and I really like it. I have 8 panels as well.

[@abambac]

Thank you, you have a great channel! I’m planning a Growatt installation in my cabin. Does the fans make alot of noice? It’s working temperature 55c - 0c. I’m a little concerned about our winters here in Sweden. What do you think?

[@jackoneil3933]

Very Cool. Will. What about adding a small sires-parallel array of super capacitors to the panel outputs?

[@wvmurse]

Wonder if a person could use 4 48v panels and use this on a van build?? Along with a 3kw battery should be able to run a 10kbtu ac... I would think

[@toronado455]

Will there are some 5000 BTU window A/C units with very low startup surge which would work better for your application. That portable A/C you are using isn't ideal. And those portable units are inefficient too.

[@harrycoral1910]

I Wonder if it could run an inverter type minisplit, they dont have the usual current surge of normal air conditioner

[@mikemotorbike4283]

cabins do this now, about 500w running.. House fridges have, and retrofitted RV air conditioners can get: a capacitor which charges up when you plug them in. It acts as a buffer to help save the fuse from blowing.. Mini spits have a peak current rating that is above their normal operating voltage printed on their spec sheets. They probably have a capacitor like a good modern device would.

[@ncdjcompany]

So I know nothing of solar but I do know that I am working with an e-pro 19-FBS travel camper. I currently have the factory installed Go Power 1000 watt power inverter with the 30 amp controller and a 100 watt solar panel (flexible panel that, like you mentioned in one of your videos has only lasted about a year and a half). I have two interstate HD24-DP dual purpose Marine/RV batteries. I want to upgrade to a 200 watt solar panel but may end up adding two or three of the same 200 watt solar panels in the future. So, with having some things already installed from the factory, I don't want to waste money on something. I agree with you that parting out all the things needed becomes costly so I am considering something like this all in one. I dont know exactly how much power I am shooting for but I know that anything will be better than the 100 watt panel from Go Power (which no longer works but may be under warranty - I'll check). I have two 2200 watt gas generators that I used to run together to run my air conditioner but I found a way around the surge that the air conditioner pulled to require two generators by purchasing a "Soft Start" device that is a godsend so now I only need my one 2200 watt generator to run the AC. Anyway, I know I'm rambling on but long story short, my focus to solar has been of greater interest recently because I want to take my camper to the Imagine Festival in Atlanta next month which is a three day festival but they do NOT allow gas generators and so I am looking at running power via my Jeep to operate my air conditioner unless there is a way this unit in your video would help to minimize the need to constantly run off my Jeep via an inverter. Love the videos. Great info. Any advice would be greatly appreciated. I'm a travel respiratory therapist and always looking to make electricity life easier!

[@tonyr3091]

Hi Will, it would be fantastic to see if one of these Growatt or MPP batteryless inverters could trickle charge a Tesla without a battery or a very small battery👏👏

[@Rj-nh1df]

Yes we need update update update

[@Brian.S]

I can't help but wonder if the no-battery configuration is more for net metering, not off-grid.

[@mikemotorbike4283]

we can be store unused power on the grid for winter heating. its like having a big battery, but we don't have to look after them...and this incredible service is free. What we don't use by march gets refunded @1.6 cents a Kw. The real value of net metering is in the banking of extra power.

[@suedohnim8019]

Hi Will, Did you every make a Part 2 where you charge your Tesla? I have a RAV4 Prime I want to charge on batteryless solar.

[@kerrygrante]

Before you disconnected the positive from terminal from the bar i saw the wire moving inside the inverter. Was it that loose all the time. (LV6548)

[@miltonch76]

I think you're missing the big point here. The best application for that inverter is using it along with AC input in the SUB mode without batteries. That way, it uses the most out of PV plus AC input to feed the loads. No crazy rules to follow for ON-GRID set ups, no bidirectional meters, no big buget zero inyection accesories and all that madness, plus ON-GRID offering for 120V is pretty limited.

[@nerdwithagun01]

Hey Will. I just got one of these myself and am doing the math around what panel combination to use. the max working current on the scc is 18A so to get the full rated 4kW you would need a working Vmp of 225v which is too close to 250v and would def have the Voc over it for most panels. I’m considering over paneling and hoping that the 18A max was conservative. Im also considering strings of 6 250W panels for a combined Vmp of 182 and Voc of 226. But even that puts the open circuit voltage over 250v in temperatures below -11C. Can I safely assume at that temperature the panels are going to be in a season without direct sunlight at their tilt angle and safely under 250v? Or is 250v a hard limit

[@brianmcmahon4156]

great question. I just bought one too. I plan at fusing with an inline at 18 amps @ 250 vdc. the units sensitivity to current and voltage are unknowns. I hope this will protect the unit on cold bright days. from over voltage.

[@nerdwithagun01]

Thanks. That fuse won’t protect you from over voltage. The 250V rating denotes the max voltage it can work at. It will blow at 18A as long as its under 250V. And I’m not sure you would want to fuse too closely the 18A max either. I don’t think 18A is a limit you can’t pass without breaking it, as much as it is a limit it won’t ever exceed. Love to have clarification on that though.

[@brianmcmahon4156]

@@nerdwithagun01 The manual said that it is capable of 4000 watt input. if you fuse at 18 amp.222 is your max voltage. you can buy fast acting fuses if the 18 amp is critical .but if your looking at the same panels as I am OCV is 37.6 takes you to your 226 ok on the voltage not on the wattage at 18 amps. but if your looking at the same panels the max amps 8.17X2 times 226 v = 3693 watts that works. thankyou for your reply. I have and email out to find out about the a cold sunny day on the panel.

[@jameshughes131]

@@brianmcmahon4156 so your fuse size will be determined by you solar panels specifications. By law any array that is in series needs fuses at each panel. Each panels fuse requirement is different. This number is found on the back of the panel. For example a Santan 250 w panel puts out Max 8amps. But rated for 15amps. Thus if you wire them to up amps you need fuses to make sure 16 amps won't bleed into a panel only rated for 15 if a short were to occur.

[@jameshughes131]

@@nerdwithagun01 but....the panels don't produce the full 8 amps each thus never reaching over 15 amps. The fuses are for systems with lots of amps. Say for example you have 20 amp short shooting electricity to a 15amp Max panel that's only puts out 8 amps or less. That panel may catch fires thus a fuse is used. When short occurs the 15 amp fuse blows before the 20 amps can reach panel thus preventing a fire.

[@hnizard]

I really like your videos. Congrats. It's a while I am following these Growatt which can operate batteryless. But I am a bit confused when connected to AC In from the grid. When the loads exceed the solar production, would the AC In (grid) ?: 1- supplement the solar prod ? Or 2- supply all the loads instead of the inverter ? And 3 - would the inverter trip off (as with your AC unit) requiring a manual intervention to reset ? Thanks again.

[@matthewprather7386]

Inverter type AC systems may help by reduce the need for a battery since they’d have much lower starting current. And since they’re typically a lot more efficient, it might be money better spent than on a battery. Then again, a battery sure makes a system more resilient in the short term.

[@pyronmasters]

Pretty good, you just showed the pros and cons. It’s just a matter of choosing the panels after getting it.

[@roberthedler8947]

Quick Question, on the spec sheet for the LV6548 6.5KW it says (18A) PV per input @250V is this accurate, if so how would, one manage that panel wise

[@Goodlifetu]

Hello. good question I have the same doubt my growatt 3000w says the same 18A and I don't know how many panels I can put on it.

[@lanfordmims5080]

WOW! for a moment I thought I saw clones or twins of Will, around the 10:37 mark! after reviewing, I realized that was some quick editing, cool !

[@coolzielu]

What is the standby consumption on this unit?

[@paulmacgiollacaoine8619]

When testing voltage of two panels in series with a multimeter is the reading open circuit voltage or working voltage? I’m a bit confused about what exactly open circuit voltage is 😀

[@ericthered9655]

Voltage is potential difference. When it's all at the one side, it's highest.

[@jameshughes131]

Will if you use solar battery less growatt you don't need a resistor for the batt hook. Just charge the unit with panels for a few secs.

[@GeraldPUR]

Why not try the SMA sunny boy inverters? 2 or 3 in parallel sounds like an interesting test. You could get 4kw with two (via SPS) and no batteries needed.

[@JetSkiBuyFixPlaySellChannel]

Is there a gizmo like this box or what would be the simplest way to put panels on a 10' by 20' shed being used as a woodworking shop. Need to run 220 volt dust collection and woodworking tools. Some are also 220 volts.

[@jamesadams5281]

What happens when the battery is fully charged. Where does the excess energy from the solar solar go? Cool setup you have there, Awesome!

[@chrisp7652]

Can these units work lying on their back instead of upright?

[@josephkostinko739]

I would like to know if it would work connecting a transformer in place of the battery? Power the transformer from utility simulating a battery.

[@allennolden8735]

So you don't use soft starts on you AC units. I can start 2 15k AC units on my solar array or generator. Previous to the soft starts it would trip constantly. I install soft starts specifically for off-grid applications.

[@WillProwse]

Well the whole point is to see if it can do it without. Pretty boring video if I used a soft start lol

[@allennolden8735]

I was just basically asking if you used them and stating the benefit. Then what you do is about experimenting and options. In your video the mentioned adding atleast a single battery and making sure the array met the requirements. You should always tell everyone all options available. Not to mention a soft start is a staple for off-grid AC applications. Keeping load spikes down are very important and allow for smaller inverters in RV applications.

[@plam600]

Any links to soft starts for AC units?

[@NinjaForHire]

I can see how this was also of getting all that done at once. You definitely need to do part 2. It's pretty neat running straight off of solar that's like ideal if it were always possible but definitely all t more difficult to achieve. I know you definitely have enough panels by now to do it though. I wish I could start my own solar array.

[@birdfood1000]

Fantastic information. This could be exactly what I need. Looking forward to part 2. Just revived you book yesterday. Thanks

[@McTroyd]

I also strategically leave wires disconnected "for safety reasons." That's my story and I'm sticking to it. 😁🤣👍

[@supremeautomotive6749]

The solar trailer is great idea I have wanted to do that for a trailer to pull behind an RV so it would be like a mobile generator. Could put golf cart inside trailer as the battery bank. Make arms that slide out over the trailer for more solar

[@herbertvonsauerkrautunterh2513]

I just use a normal grid tie inverter/s with a seperate charger for the battery bank. Then I have a 6000w peak power inverter connected to a few circuits in my house. I know it's not off-grid but the easy I have it set up gives me free power.. 😎

[@luketoh1]

Would a super cap help? Instead of a battery....just to buffer against the spikes in current.

[@pinay56]

I'm always interested in new equipment. So if what you say is true, I'm NOT going to need a battery bank in a travel trailer if all I do is hook up solar panels?

[@laserflexr6321]

It is clear looking though the comments on this video that there is an underserved segment of the market. I know there are plenty out there but it is hard to dig through em all to find one that will do it in a simple and efficient way and even harder to find one marketed that way. 2-6kw or so solar without batteries, independent of the grid. Going in to this adventure I thought that would be THE most common use, surprized to find that it is almost unheard of. Ok because of motor starting current you either need a LOT bigger array, or battery. Some have mentioned making use of caps, ehh gonna take a bunch of them in place of a battery, real spendy. On the panel side, unless the inverter had provision for it in the algorythm it is gonna give the MPPT fits and you would still need big, expensive caps on each panel in the string to do any good, and the cheaper electrolytics are not gonna live long at roof temperatures. In this case the battery doesnt have to be elaborate 3 day, whole house battery, it really only needs to be big enough to kick 40 amps for a few seconds maybe twice an hour, it could be as small as a motorcycle battery or a handful of 18650's and Bob's your uncle, or Bob was your dad in my case. But why not go ahead and use a car battery for nearly the same price and get an hour or 3 of cloud protection? If this inverter can be set up to do so, that starting current supplied by grid, run current supplied by solar that would eliminate the battery except when grid is down. My main goal at the moment is to reduce the on-peak usage as much as possible due to price. For about 5 years I have been pre chilling the house then not running ac for the 5 hottest hours of the day. Sick of that s**t! Just need to run a window unit, fridge, an led lamp, router and computer during that time, that is my main goal at the moment. Off to watch more of your vids. Thanks! like, like, like, like......

[@Florida-cracker]

I have wondered if you could take a grid-tie system and use it as a stand alone system (without batteries because it is a grid-tie system). My thought was get a small PV panel and small inverter/battery and connect that to the A/C OUT side of the grid tie inverter to act as a reference and mimic the A/C grid. The output side of the grid tie inverter should then supply current.

[@mikemotorbike4283]

"How to fake a sine wave." It could be really small, like a 15w car cigarette lighter inverter, which could be powered by your big batteries. The small inverter might be asked to produce a continuous 7 watt (minimum, I'm guessing). Maybe the big inverter would burn up the small inverter, demanding as much as it could get continuously. Maybe there's a setting to limit AC draw. It might somehow be circulating in the system if it was connected to the big battery, although the big inverter's AC/DC transformer windings are isolated. Would something overheat? I'm not sure if I can see the grounds. Your idea to use a solar panel might remove this potential issue as it would isolate the grounds, I think. Would that be a bad thing? You'd need a 10-20 watt panel I guess for an AC15w small DC12v inverter. or buy an brand new inverter that has the specific feature of switching to battery when the power goes out. (it's understood they must all disconnect from the grid within 2 seconds of grid down)

[@SWPG]

*WOW super cool. Great Videos Brother !*

[@tiloalo]

So if there is like only 60% output from the PV array due to bad weather, the inverter won't produce any electricity? As I live on Germany, max power would only be reached rarely, so it would be quit limiting.

[@mikenewman4078]

Thanks Will. Growatt have some innovative products. Has anybody ran Growatt products wirh the earlier Giant Power products? I will await the follow up.

[@bahaalsakkaf7853]

Can we use supercapacitor instead of batteries just to meet the initial starting torque required by the AC.

[@unionse7en]

Would like to see if the inverter would probably run a (no surge) inverter type air con/heat pump without a battery.

[@steveforliberty7801]

Very Cool. I have 6 305 watt panels with 40.05 open circuit voltage. Would they work with this inverter?

[@twebster1948]

HAPPY THANKSGIVING TO YOU WILL...

[@erinspinelli3329]

This is exactly what I was looking at!!! I love your videos!!

[@garethbaus5471]

Something like this seems like it would work better with a blend of power sources perhaps solar and wind so you can get more consistent power without needing as large of a battery.

[@jeremyajohnston]

Will the Growatt prioritize the input from the array rather than the batteries for loads? Meaning if the batteries are full, will it cycle the battery power or the use the available solar for loads? I assume it's going prioritize whichever voltage is highest to supply the load.

[@ChefShaunParker]

Rps solar well pumps are standalone dc well pumps. They work seamlessly

[@brayanalonso4515]

I at first wanted the older non -es version but the power consumption turned me off at over a KW per day. I looked at the new Victron Miniplus II 48v but it only plays well with other Victron stuff and almost twice the price of Growatt. Then thought of the surge friendly LF like the Must, thinking it's cheap, powerful and reliable enough. My 10kw battery just arrived from China and got ready to make my order and saw this. WOW! I'm Getting this to send to Central America with the battery. Power hungry little beast, 60w idle consumption? That's hungrier than my teenage son! I'll try it out though, if 1.5KW per day consumption gets on my nerves I'll buy a 48v 1200w Victron Phoenix to run the 24/7 stuff, the Growatt for the big things when needed and standby the rest of the time.

[@oliverpillay9667]

I think I may have missed something on this video, what I don't understand is how would u power d aircon when d sun is low or @ night or is this a day only experiment