Building a 3000W Portable Solar Power Station, Great for Power Outages!

[@LithiumSolar]

Featured EG4 Battery... signaturesolar.com/eg4-lifepower4-v2-lithium-battery-48v-100ah-server-rack-battery-ul1973-ul9540a-10-year-warranty/?ref=lithiumsolar NEW Blog Post... offgridbytes.com/building-a-3000w-portable-emergency-power-system/ This is a super quick and easy build. Let me know what you guys think! (affiliate links)

[@stephensuter5016]

links show much higher price than you posted. I do like the build and think it, or something very similar will work great!

[@LithiumSolar]

@@stephensuter5016 Which item are you seeing a higher price for?

[@mondotv4216]

@@stephensuter5016 They all seem to be the samerice when I click on the links - unless you’re looking at CAD or another currency?

[@skidmark7845]

@@mondotv4216 Yep , thanks to uncle Biden.

[@ustaarthur]

First of all, congratulations on the knowledge of electricity and talent to build your projects. I'm a new subscriber and your videos are very educational and enjoyable. Regarding this 3000W portable solar power station, can you please give a few examples of how long this power station will last on one charge using different appliances, devices or power tools? For example, if you hook up a refrigerator, how long will it last? A full size TV?

[@pyronmasters]

Watching this video during a blackout in PR. These videos actually helped me build a small system after Hurricane Maria.

[@MikeSmith-lx9jg]

You realize a small gas generator puts out way more power for 4x cheaper.

[@dailyrider2975]

This combo would work for outdoor parties and the components could be made to fit on a bike trailer for camping

[@joatmofa0405]

THIS IS EXCELLENT! I suspect I may have commented the same previously : Your videos are to the point, void of unnecessary time-wasting talk and just packed with useful information - ALL crunched into a short, concise, easy-to-understand video! THANK YOU - PLEASE KEEP IT UP!!! *EDIT* : Your video has inspired me to build my own mobile powerstation which turned out to be so popular that I have had to build a few for family & friends too!

[@VinceBadovinatz88]

Wow that's awesome .I think this cart setup is very nice too

[@lancebrown5277]

Thanks. my thoughts also!

[@CherokezPittman]

Thank you for your kind words! I completely agree with you, the video is excellent and the information provided is really useful. It's great to hear that it has inspired you to build your own mobile power station. If you're looking for a reliable and versatile power station, I highly recommend checking out the Segway Portable PowerStation Cube Series. It has a massive capacity, powerful output, and fast recharging capabilities. Plus, it's built tough and waterproof, making it perfect for outdoor adventures. Keep up the great work and happy building!

[@QuTeBug]

I absolutely LOVE this, especially because it’s so mobile! I’m over 65 and just don’t have the strength to move this stuff around and I’ve been wanting to provide myself with a backup emergency power. However, my husband passed last year Im alone and have nobody around to help me do this project. Someone ought to find a way to help those who can afford it but don’t have the help to do it themselves. Calling a ‘Solar company’ wouldn’t do something like this..this is Brilliant!

[@BobBob-il2ku]

If you show this video to a electrician most would do this for you or even a mechanic could handle it

[@BVLVI]

FYI the growatt is a BEAST! 2 years in my boat on the ocean. No issues

[@Crazson34]

I'd love to see pics of your setup. I'm hoping to get a 30' Cruisers next year and want power for the A/C and water heater.

[@joneslr25]

Can you provide more info about your setup?

[@VinceBadovinatz88]

Nice

[@solarforfuture]

running the growatt 3k. same bat.. one cable and they communicate! . wall mount, it runs my whole house 24/7 with 1,300 watts pv.. big fridge. toaster. electronics. electric blankets... could charge from the grid ... but no need . luv it signature solar.

[@Works504]

Love where these cart builds are going. It's like the beginning of hotrodding all over again, same with ev swaps into old cars. Every one start learning to weld let's build America into a highly modified craftsmen culture it should be.

[@ItsEverythingElse]

This is exactly what I need. I will have a 30A plug to plug this into my manual transfer switch for critical circuits.

[@scottflatland2766]

Thank you for an easy and wonderful design. I built the portable solar generator, but used 2 EG4-LL batteries to have 10kw. I bought a garden cart (supports 400 lbs) to mount everything on. I used my EGO ZTR mower to pull it around. I also bought 8 (used) 455w panels from SanTan solar for $175 each to recharge it. I estimated the ROI is 5 years for the whole setup. Thanks!

[@patrickkenny2077]

One modification I might recommend is mounting the EG4 battery backwards so you have clear circuit breaker access-- breaker on front/top and lug on back/bottom. Also, the Costco 3-in-1 hand truck might make a few things easier-- using self-tapping screws instead of U-bolts as an example, but also easier to use it to haul panels at the same time. It's a little more expensive, but a good value none the less.

[@robjanusch998]

Thanks for including your costs associated with this build. So many people that do DIY builds, don't.

[@markhelminger5597]

I built this for my sister since she’s renting and couldn’t tie in. I used a 5K Growatt and hung a transformer on the back. Then designed folding stands for the panels. Works great!

[@smjewett]

I am very thankful you are so thorough in your procedures. I wish more people on the tubes did it like you!

[@daleburnfart6845]

I like it. I would though add a hitch attachment to the upper handle of the hand truck to connect it to the back of my riding lawn mower.

[@davezell6442]

I just finished one with a Growatt and the same battery but with the addition of a breaker box that allows me to use the full 25amp capacity thru a 30amp receptacle that my camper will plug into and I added a male electrical plug to receive a cord for recharging the battery.

[@juwe9516]

Commentary is incisive and overall inspiring. Thank you

[@Spenny99]

This is exactly what I was hoping to find. The technical and physical setup were each explained in a clear manor with the right amount of detail. Liked & Subscribed!

[@russlo5324]

I built the 24 volt version of this, and yes, my DC circuit breaker is about the size of a shoe box! LOL. I made a few changes like adding am 800lb working ratchet strap tie down ($6) to hold the two 12 v 206 AH SOK batteries in place. I also used a 2 x 4 in place of the bottom full-size, (no drilling) not 1/2 strut, secured with 2 hole pipe clamps. I did not need to drill the Growatt and the back of the 2 x 4 holds two 20A GFCI outlets and the PV circuit breaker. Works great! Thank you for the inspiration. Good Job!

[@HumblyServingGod]

I have the exact same handcart and love it. Buying the stuff you need for solar is rather expensive, but the ability to generate electricity for free whenever the sun shines regardless of the grid is totally worth it.

[@VinceBadovinatz88]

I agree that's why I'm doing a system. I'm not doing a portable like this but I thought about it actually and I may do it someday. One of the commenters said he built one for himself that it was so popular now he's building some for all of his family members .I would imagine you could build 1 somebody might buy it

[@GEOsustainable]

WOW, perpetual power...as long as he keeps walking with his little wagon.

[@OffGridEssentialsbyFirebear]

So we’ll done!!! My EG4 is being delivered on Wednesday, I am making my house a hybrid part off grid/part on grid house. I really like this design & great job on the editing. You have earned another subscriber!

[@francespueo5367]

I really appreciate your explaining clearly on the Mc4 extension. I'll remember Pointy to negative. Just bought the EG4 with battery and planning to follow your very well easy to follow video. Mahalo.

[@edmundgarcia3113]

Just did this set up a few weeks ago works great. We live in a 5th wheel with some land we have 10 410watt bi facial panels and growatt 3000es it powers the whole 5th wheel including the 13.5btu ac during the day and have enough battery to run all basic appliances during evening hour's. We do have to turn some things off with higher loads not a big issue we will probably do split phase with another growatt in the future. If you have the space to do it just do it you'll be amazed what solar is capable of. Pay back period for us will be less than 2 years.

[@mikew2046]

Great to hear for RV usage , what type of solar power is regenerating and how long to charge?

[@edmundgarcia3113]

@@mikew2046 I'm producing about 20kwh on a full sunny day and recharge takes about 4-5 hours roughly depending on the power being drawn Im sure I could easily charge 2 batteries on a sunny day if I an extra.

[@victorthecarguy3126]

I would put the unistrust on the back side then use longer hardware to mount it. The weight would be in closer to the hand truck. I would also recommend putting it to use full time to offset the cost. Mount some solar panels and power as much of your house from it. The battery will fail due to years far earlier than you will wear it out for cycles plus you know it's always good to go if you're using it.

[@bousabousa2377]

Great stuff ! Love it. To make it electrically safe and compliant, you are are required to add an RCD protected power board instead of that black one you have. Also a 6mm2 earth lead connected to the inverter, that you can roll out and connect a portable earth electrode to and bash it into the ground. This is extremely important. If the outer case of the inverter or trolly were to become ‘live’ and someone touched it, this would prevent electrocution, otherwise the human body would be become a part of the circuit to ground. Gotta be careful with these you tubers !

[@WideAwakeHuman]

Why don't any of the self contained electric "generators" have the ground bar like you're talking about? Serious question, I don't know much about the stuff

[@dylan-nguyen]

@@WideAwakeHuman they use a plastic case Can’t electrocute ur self on plastic!

[@IsmaelMartinezPR]

In a power outage, would leaving the AC input connected to the house (although there is no power from the grid) provide the needed grounding, The AC Input has a green lead that is connected to the green of the house. If with a multimeter check continuity may make sense.

[@joatmofa0405]

@@WideAwakeHuman A domestic generator (used at home) does not come supplied with this earth spike. So Joe Soap doesn't use the earth spike. But, if you work in the mining industry it is compulsory to have an earth spike attached to the generator that you hammer into the ground.

[@joatmofa0405]

@@IsmaelMartinezPR Assuming the house is properly "earthed/grounded" (in other words an earth mat buried somewhere around the house), then YES, the earthing/grounding would be sufficient!

[@dlpeters0n]

I owned that exact hand truck for many years, and it's good, but it's now $100. Harbor Freight sells essentially the same one for $70. FYI.

[@troyyarbrough]

This is the best portable power station build I have seen so far. Many of the ready made power stations cost over $800 per kWh. This one comes in at about $521 per kWh and has more than double the capacity. The only thing I would add to this setup would be a copper ground rod with a lead. Then I could push it into the ground before starting up the system. Just an extra safety step.

[@whoanelly-]

Would you stick with 48V vs 24V? Im a noob with this sort of thing and get nervous witha nything grater than 24V if you do something dumb..I know, dont do something dumb! lol

[@troyyarbrough]

@@whoanelly- Personally, I would use the 48 volt. But the 24 volt would work well also. You would also need the 24 volt inverter to make it work.

[@j.malone1293]

I like your advice for a ground rod. I am a noob and have watched a number of smarter people build their handtruck systems without talking about earth ground or charging the metal hand cart with 48V. How deep does a ground rod have to go into dirt? Guidelines of 6-8 feet for home grid systems are all I can find.

[@ItsEverythingElse]

@@whoanelly- For something movable like this, with a metal cart, 24V would def. be safer IMO.

[@ashleyshrader1427]

​@@ItsEverythingElseI already got the 48v battery and can't return it. Should I try and sell it and get a 24v for this type of unit?

[@UA-00-ANO]

I just discovered your channel with this video, and... THIS is what i like ! Divert the use of an object, to create something useful, better and cheaper than what can be found on the market. Really creative! Thank you !

[@alanesterline2310]

I like your build enough that I plan on making one myself. I figure it will run a pellet stove for a long time if we get a bad blizzard that knocks out the power. Three hints on your build. If you can cut the strut in between the slots so that it cuts down on the sharp pointy edges. As you tighten up the ty-wraps pull them around to where the cut ends are out of the way where hands/arms and other soft tissue will not contact them. These ends when cut tend to be sharp and will cause cuts, even the small ones will cut you. If the solar generator will be outside very much, consider use black ty-wraps as these are more UV resistant.

[@TJ-ht3jb]

I bought the EG4 battery and connected it to the EG4 inverter on a hand truck very much like the video. Purchased some used 295 watt panels for 65 dollars each rated at 295 watts each. The max I've been able to get is about 220 watts each. Still that's over a Kilowatt for several hours a day. The one question is do you need a breaker between the inverter and the battery?. I know the battery has one but I think they still recommend a breaker/disconnect in-between .

[@danielpawowski9965]

would love to know that too?

[@russlo5324]

The mfg recommends a breaker between the battery and inverter. I suggest downloading the manual and following the electrical code for your area.

[@horsreseauquebec]

Hey! I just did that today in the forest! I moved everything to the canoe, then onto the dolly, then up the hill to cut some trees. The 1800W chainsaw works well, but this is very hard physical work! By the end of the day, I was able to charge the battery back to 100%. It's very heavy and a bit inconvenient (the chainsaw with the cable behind), but I can repeat the process each day without going back to the city or gas station. I think the benefits are far greater than the work to move the weight. Anyways, within a few years, we should have better equipment and batteries after we invested in this transition technology. I hope to see the day when it becomes stupid to use refined gas instead of raw energy coming right at us... I use a few ratchet straps (reusable) to fix the battery and inverter on the dolly. You can also put the inverter/controller sideways with a strap or two, no? I also use double sided velcro to fix cables, they are reusable as well if the setup is temporary.

[@eradicator187]

It sounds like you have a sweet setup. How do you charge your battery? Do you haul around solar panels too?

[@horsreseauquebec]

@@eradicator187 At 23 kg per solar panel, I leave them in the rack! I just carry the battery back to the cabin and connect it directly to the charge controller.

[@joerivas9847]

And make sure you dont use ANY products like tires, cosmetics, plastics, etc. made from stupid refined oil/gas.

[@lookingoverhell3448]

@@joerivas9847 can these batteries be recycled ,, i think not ,they are a forever product once built ,, meaning you have to just throw em in a dirty big hole ,, maybe they can fill those big mine holes with em ,great for the landscape ,,

[@latymz]

After owning several brands of portable premade units, I will be building my own in the future. Just too many complaints and issues from customers and poor customer service/support. Just makes sense.Easier to replace an item if a major component fails.

[@putteslaintxtbks5166]

I think a good add on would be a led light on top. If power goes out, it would keep you from fumbling with a flashlight while getting it into the house, hooking up what you need to run, etc.

[@jakeliujakeliu]

Can you make part 2, able to connect to more battery for more station usage. But able to me mobile if need it. Thank you Question, don’t you need some type of fuse between positive wire?

[@LithiumSolar]

There is a circuit breaker built in to the battery.

[@jakeliujakeliu]

Great always want to figure out a way to build this and be more portable. Is this more reliable than ecoflow and bluetti?

[@dropshot1967]

you could use a metal hose clamp to attach the battery handles to the cart. that is a bit more secure than zipties. You could also bolt a piece of angle iron to the bottom of you cart, for the battery to rest on.. It would prevent the bottom of the battery from shifting forward.

[@LithiumSolar]

Oooo metal hose clamps are a great idea!! I thought of a simple L-bracket at the bottom but the bottom of the cart needs to sit flat to keep the wheels up, so having a bolt underneath wouldn't work. I suppose you could counter-sink it fairly easily - that might work.

[@BradCagle]

@@LithiumSolar LOL, I was looking for a comment about the zipties. When I use them in my videos people don't seem to think highly of them :) Although I find them to be highly effective, and reliable.

[@caretakerfochr3834]

@@LithiumSolar You can also get stainless steel zip ties which will have a longer life than plastic.

[@jojoepapah8600]

you did a really nice job.. it's almost plug and play!

[@whoanelly-]

I love this idea! Very frustrated with all the options by bluetti or echoflow due to the cost. love this DIY and you have given me confidence to do it!

[@XGenBoomer]

As a young apprentice electrician, I cut PLENTY of 3/4” unistrut with a hacksaw. Cut through the U and score the inside and it brakes off pretty easily. Works on 11/2” to, but you’ll be there all day and it can get wavy. I like this contraption! ✊🏾

[@LithiumSolar]

Maybe I need a better hacksaw then (or at least a different blade) 🙂

[@JayWye52]

angle grinder with cutoff discs will chop thru this easily. but it will make a lot of sparks....

[@eddiekytia]

WOW,WOW,WOW.... I'm just about to buy the bluetti ac200 max but after seeing this I'm torn.... this is 5000wh compared to 2000wh with the ac200 max this has a 3000watt inverter compared to the 2000watt ac200 and this is capable of more solar more ac charging and I can add MUCH MORE watt hours in batteries all for ABOUT THE SAME PRICE. the only plus I see with ac200 max is compact has 12v and looks cleaner....... I don't know what to buy now..... THANKS ALOT!

[@LithiumSolar]

It's important to note too in the decision process, that the Bluetti is significantly smaller and can be picked up. While this cart wheels very easily, you can't exactly lift it up (has to weigh 150lbs or so) without 2 people. :)

[@putteslaintxtbks5166]

I was close to ordering a ac200max a few months ago, but finding it only had a solar input of 15 amps stopped me, would need panels to be wired in serial, in an RV, you often can't get all the roof in the sun and that's a big problem with serial hookups. Other than that, I think it's prob about best "solar generator" out there that I could find. I plan on a Growatt, Mpp or Signature Solar has a new all in one too and need to hear more. about.

[@gountzas]

It's funny to see the epiphany, some potential DIYers have. A separate system is always gonna be cheaper for the same output than a "designer" plug-n-play one. Even better you can save more money if you decide to build your own battery and combine it with an inverter and other components that correspond to the voltage and ah of the battery.

[@janaksodha9582]

Consider buying a EcoFlow delta pro. It’s about 3600 Wh of LFP battery.

[@Syncere20]

Having separate components is very smart because if one fails you can just buy another inverter, battery or whatever .

[@privateuploads-geo2625]

So for how many hours would this setup power a garage freezer and kitchen fridge that combined use about 3kwh in 24 hours? And what size solar panel setup would it accept/need to recharge the battery within the allotted time? I'd like something that I can use to keep my freezer and fridge going for an extended time 2 in the event of a massive power outage. Ability to add a small light bulb and iPad charger would be a nice addition too.

[@LithiumSolar]

This is a 3000Wh battery so if your load is using 3kWh in 24hrs, it would power the load for 24hrs assuming full battery and healthy life. I have a separate video on connecting/sizing solar panels kzbin.info/www/bejne/h4itoZSchK2iepI

[@privateuploads-geo2625]

@@LithiumSolar isn't that a 5000Wh battery? 3000W controller? so it should easily run the fridge and freezer for 24 hrs non stop and then some, right? if fully charged. And if I have to run a generator to charge it, how long might that take? I have a 14 KW propane house generator. Please excuse the simple questions as I have very little knowledge of electricity

[@koepketube]

Thanks, good idea. I had to build one. I ended up cutting off one side of the bottom U-bolt's threads for clearance of the inverter fastening holes. Pinched the u-bolt in a vice so it's tight around the dolly, and the one nut held it on very well. Unistrut caps are also a nice touch.. but at $5 each. Or you could use some large heat shrink to cover the struts -or both like I did

[@russlo5324]

I bought a bag of strut end caps on ebay for about $10.

[@ko2890]

Could you add a video showing this unit connected to solar panels for charging and what you recommend for number of panels?

[@LithiumSolar]

I have a whole video dedicated to that topic here kzbin.info/www/bejne/h4itoZSchK2iepI

[@ko2890]

@@LithiumSolar Thanks!!!

[@ko2890]

opps spoke to soon I did see this video I did learn about the properties needed to be met in selecting panels. BUT, not exactly how they were connected and why series vs parallel is used.

[@rickf.9253]

Brilliant, yet simple! Exactly what I am looking for in an emergency backup to run refrigerators and a freezer, and charge with solar. Holy smokes, that's up to 4500W of solar input! That's awesome. Thanks for doing the video! Can you make a solar panels recommendation?

[@wellnesspathforme6236]

Consider using your vehicle to power your refrigerator after opening it. Best to have a top lift lid for freezer so cold air doesn't flow out as much when opened. Keep fridge and freezer closed and off as much as possible. Organize it to minimize open time. Learn to preserve foods without a fridge or freezer. You will be golden.

[@melonshop8888]

👍👍👍

[@dougyoes]

@@wellnesspathforme6236 One thing most ppl don’t realize is that a manual defrost freezer uses far less energy than a frost-free freezer. A frost-free unit is, on average, 34% less efficient. That’s a big number. Especially when powering from a solar generator.

[@dougyoes]

@@wellnesspathforme6236 I agree with your comment about learning to preserve foods without refrigeration. Everything from properly storing grains, to vacuum sealing, to pickling, to dehydrating. One of the important things I’ll use a solar generator for is to power my grain mill. Yes, I could use my hand-crank mill. But it’s time consuming. I live in southern AZ where the sun shines 360 days a year. I’ll plug in the solar panels while I’m baking my bread.

[@r.b.l.5841]

Thanks! I copied your idea, but used a MPP2724 with outlet plugs built right into the unit on the side and MC-4 PV input plugs on the bottom, and I built a DIY battery using 304Ah cells (24 volt) and Daly BMS with the 2A active balancer. It works great. We are using it in the Green house for now, later in the RV when the weather is warmer, and in the fall time we can use it around the homestead while we get ready for winter. Handy to have power anywhere you need it SILENT! unlike the gas generator we used to use, that is LOUD, smelly and expensive to gas up. Great project for anyone with a few basic tools and skills.

[@mycabinlife1291]

I already purchased from signature solar and I am not happy with them. I have inverter that I can't use until they send me a data cable and I don't own a computer so I have to find one and borrow it and I don't have internet so then I have to go find that it's just ridiculous this is supposed to be plugg and play. Anyhow I like the idea of the inverter that you bought but I would like it bigger. I already own three of the eg4 batteries and 14 of the 455 watt solar panels. I brought four of the panels with me back home and the other 11are up at the cabin. I have a growatt infinity 1300 power station which i like, just doesn't last long. So i started researching how to increase my battery capacity and fell down this rabbit hole to make a cart system that basically works like my growatt using the eg4 batteries I've all ready paid for. I like the idea of the built in plugs of the unit 2724. Does ut come in a more powerful unit? One that will take more input from solar and one that will export more power so I can run like a window AC unit and hook up additional batteries?

[@50calkev]

Possibly a good idea to add a set of dummy clips for the solar connections you could use 3m clips to adhere them to the side of the inverter to both secure the cables further but also keep the solar connections clean from dust and dirt on field deployments

[@POW2000]

So cool...I am going to try building this awesome backup system. In my neighborhood, there's always power outages.

[@Codger2015]

While I understand not adding plywood to the cart I would think at the very least a strip of rubber membrane tape should be added to each rail on the cart prior to cinching the components to the cart rails. This would provide a sort of non-slip surface to prevent the components from any amount of slippage plus protect the rails from abrasion.

[@garykaminski3217]

How about a pool noodle for vibration absorption. 🙂

[@amantin]

I love how clean and adjustable and reusable your setup is! Nothing is permanently joined with welding. One adjustment for even cleaner setup. Use velcro stripes instead of tie-wraps. Peace!

[@KarasCyborg]

Good buildout, would like to see a 220v split phase inverter as well as a generator transfers switch for a whole house cut-over. At least a 50A setup so you can run your AC/Fridge and some lights.

[@LithiumSolar]

You might be able to fit a split-phase inverter; however, think this is about the most I'd want to put on the cart. It can hold the weight but it gets bulky to move around.

[@boblatkey7160]

That would be great, and the battery would fail in about 25 minutes. 🙄

[@ελευθερία-ε2ο]

You need atleast 4 of these batteries for a split phase inverter to even make sense

[@Oblivionsurveyor]

I built a portable power bank with strap for carrying a 200ah lithium but with the ability to add other battery's to increase capacity without going into the battery box. Using a Noco 8D box and 2500watt roarbatt inverter with 50 amp victron solar controller. cost under 1500$. I put a large silicon mat i found cheap on amazon on top of the Noco battery box and that allowed me to screw components that can get hot on top of the plastic box without worrying about a meltdown. Wood was too bulky and less conforming. I decided to go with Terminal bus fuses to fuse in and out of the battery. I already have plans on building a 2nd box but that box will only have a kill switch and fused cables that can hook right into bus bars i installed on the main battery box.

[@cameronalexander359]

Brilliant concept & execution. Thanks for tsking the time to shoot this & share 👍

[@bachser]

Should I hook up the ethernet type cable between inverter and battery. I used exactly the components you used. Thank you

[@kswis]

We live in a fantastic time for dependable energy, you can power a house, from a handtruck.. another excellent build. Thankyou for sharing. And I'll agree with others about the tires. Solid core tires with decent bearing will last forever.

[@Armenian]

Well not really 5kwh is hardly enough to power a realistically sized residential dwelling

[@budmartin3344]

You can add another battery pack then you will have 10KWh which is more than I what I use on my 1600Sq home per day. and it is great for rolling black out here in Cali.

[@Armenian]

@@budmartin3344 the only time I use 10kwh daily is in the cooler months. Texas is hot. Not everyone lives in “Cali”

[@budmartin3344]

@@Armenian Well, you just have to build your backup system based on your needs, no one size fit all. I have 10KWh system for my backup and it fits my need just fine.

[@Armenian]

@@budmartin3344 i understand this. And hence why I mentioned that 5kwh is hardly enough. You’re looking at a 30k+ investment just for energy storage alone. Not including panels and split phase controllers/inverters & wiring.

[@thomasthibedeau]

I'm impressed by this...really like it.

[@mr.goldenrod291]

Connector biology 101: Pointy=male, “rectangular”=female. I’m working on a similar build. Thanks for the ideas!

[@Sylvan_dB]

Connectors are a bit more complicated than that, unfortunately. Gender applies to the electrical contact, not the plastic shroud. If you look inside the shroud on each MC4 connector, you'll see inside the round one a "large" open metal part which receives the mating connector. This is the female. The male metal part in the rectangular plastic shroud is smaller diameter to fit inside the female, and sometimes is open on the end and sometimes closed.

[@LithiumSolar]

@@Sylvan_dB And that's exactly why I called them "pointy" and "rectangular" LOL. The pins are opposite gender of what you'd expect by looking at the plastic housing. Calling it "pointy" sounds silly, but it's difficult to mix them up that way...

[@tc4275]

Would be nice if there were red and black connectors

[@leiladaquil6587]

where solar panel and how you did setting up?

[@LithiumSolar]

A new video is up showing the solar panel connections 🙂 kzbin.info/www/bejne/h4itoZSchK2iepI

[@moeali12345]

Excellent presentation. Is there a video that shows how to build the solar array for this power station if I want to use it on a daily basis?

[@eliinthewolverinestate6729]

I built one. Had to extend the battery tray to hold solar panels during transport. I have 2 lead acid batteries and 2 super capacitors. The super capacitors cycle so the batteries don't. Like a capacitor on a car amplifier to keep headlights from dimming as the bass hits. A super capacitor can cycle millions of times and a lithium battery only 12000-18000 cycles. You get longer life out of batteries by using super capacitors. Super capacitors act as a soft start too. This also helps to reduce hard cycles and heat on batteries.

[@russlo5324]

Dude. 12,000 cycles is over 30 years! Only?

[@eliinthewolverinestate6729]

@@russlo5324 Go look at some solar boat videos. 12000 cycles is only 4 years of daily use. That's only one cycle per day. In fact, several studies, indicate that battery capacity may drop as much as 40% or more after 1000 cycles.

[@MatthewTaylorAu]

I like this. A few things I'd do differently, call it the benefit of hindsight. - position zip ties so the sharp cutoff are less accessible - less chance of cutting hands. (also use flush cut sidecutters) - dual pole isolation switch on the solar input cables. - mount a water proof switchboard cabinet on the trolley, then mount the components inside (yes this increases expense) the weatherproofing on this will be needed as I'm expecting it would be used outdoors for (say) camping, building sites, etc - I dislike zip ties, find a different bolt mount system, I'd look at threaded bar and channel to clamp the battery in place. but those are really cosmetic issues by comparison to the fundamentals. still good design. thanks for creating and posting the video.

[@joatmofa0405]

One could also drill a hole in the hand-truck (trolley) frame and put the cables through the frame.

[@737smartin]

x x ...I'm planning a similar build. Can you recommend a specific "water proof switchboard cabinet", and what parts would be inside? All of it inide one case would require...basically a small closet. I looked on Amazon, and it's not easy to sort by dimensions.

[@charlestatakis9363]

Excellent design. I plan on buying a used Nissan Leaf and charging it using a similar device with a 7000 watt lithium cell, 12 volts and 3KW, pure sine wave inverter. Mine will be a bit larger and horizontal but still very much like yours which is pretty reasonable and appropriate.

[@kowalski8]

"positive lead goes to positive terminal", brilliant

[@robertweekley5926]

Not Everyone understands "Electricity 101" however, so, while "Redundant" for us, it's still helpful, and important, since he's not shadowing each of us building one!

[@FaizelMoosa-og3yl]

@@robertweekley5926 Awww. You so butch!

[@eddiekytia]

I'm sorry for all the questions but you've been a WEALTH OF KNOWLEDGE. Systems like the bluetti or ecoflow have an ac output efficiency of about 80/85% have you done real would test to see the efficiency of the growatt and eg4 battery. I'm buying the new bluetti ac200L for a semi portable unit but LITERALLY because of all your videos and help IM BUILDING a diy growatt and eg4 battery system for home emergency. Its scalability to add thousands of watt hours and even to add a 2nd inverter for more output is amazing....... THANK YOU

[@Minnross1]

Great build. I build my first after watching your earlier videos but its only 2400w with 2400w inverter. Maybe time to build another one. Just need to hide the receipts from the boss lady.

[@jp4163]

What should the jumper positions be on the battery and on the inverter? Great video...thanx.

[@twigandroot]

yes! you were able to turn the sound off. thank you so much for this tip, I hate the loud beeping. awesome build!

[@LithiumSolar]

Yes! It's so obnoxious. I have no clue why that comes defaulted "on" for all of these inverters...

[@DBRGB]

Very clear direction, all with out annoying background music. Thank you.

[@markbajek2541]

Maybe place a small block of foam on the bottom blade to cushion the battery and perhaps line the cart rails with pipe insulation to help prevent marring of the battery case. It would probably make the battery less likely to slide around on the red metal rails.

[@shawsr7]

You've got the right stuff, dude.

[@evelyny7037]

Having endured the catastrophic ice storm in Texas, I am researching to find a solar back up. Now, I am already hearing of power outages in our state and something like this would certainly bring peace of mind. Great job!

[@Crazson34]

I bought a 13k portable generator that runs off propane and gas and I keep a dedicated propane tank just for it. I'll be building a solar setup as well just to get off grid as much as possible. Best of luck in Texas from us here in Arkansas.

[@evelyny7037]

Thank you! God bless your endeavors!

[@hcho8164]

Great video. Something else I think people would want you to do is build a 240v ac output using two inverter setup. Some people might want to build two to charge their ev. Bluetti has an ac to dc charger for replacing the solar charge with ac charge at people's apartment residence. And multiple companies offer 240v ac split phase adapter, Jackery, Bluetti, Eco Flow, Anker, Pecron, and maybe more. I thought it would be too much work to drive ev while living in apartments, but it might be doable.

[@ericapelz260]

I would love to see some testing. How many panels do you plan to have for this? The specs seem to indicate short strings.

[@LithiumSolar]

A new video is up showing the solar panel connections 🙂 kzbin.info/www/bejne/h4itoZSchK2iepI

[@americansfirst1095]

I will take your word on how it works. One of the best, if not the best video that ive ever watched.

[@zanedzikonski4234]

Great setup! At a cost of 3k I wouldn’t just keep it on standby in the garage. I’d throw a few solar panels on that bad boy and take a few loads off the grid. The cost of a few panels is not much more as it relates of the current investment. The of Roi might not be huge but it in the case of increasing rates or leveraging time of use rates it good be. In theory you shouldn’t have to worry about life cycles on the battery or other expense and maintenance.

[@TC-dk6do]

Lol

[@pilinke11]

It is possible to build all this on a big tools box? For easy to carry and protect the stuff

[@jvm3753]

If I were to build this exact setup, what and how many solar panels would I need? They offer a similar battery, better warranty and more cycled for a few hundred more. Would it be worth it? Thx.

[@737smartin]

Much more info needed. Your solar panel requirement depends on your need. Keeping up with a laptop, an LED light, and a small microwave for a few minutes a day in Phoenix would be easy with one 200W panel. Adding a household fridge, two space heaters in a northern winter or even two window-unit ACs in a hot summer climate with cloudy weather would require a significantly large array. 🤷‍♂

[@jvm3753]

@@737smartin Ok, thanks. I've been looking at getting 2, 4000kwh inverters, to have 220vac and 3, 48v batteries, and buying a pallet of used panels. I'm wanting to put together a system so if the grid goes down, I can keep my freezers (3) going and be able to run my well pump, (220), But, I need all the info and help I can possibly get. Thank you.

[@freebirdgliding]

How do you ground the inverter?

[@blairdavis4048]

Awesome. So the goal, if I understand correctly, was to make this pricey setup more functional as both a solar power system and quick disconnect from solar array to be used as a portable/backup power when desired? Seems well suited and easily pulled up a simple ramp into a p/u truck or trailer for offsite power, fun wknd portable power at beach, campsite, jobsite, etc. I have used a similar dolly setup for portable dual high velocity 22" fans with mister system for portable cooling in scorching Tx. This for RV class C solar setup, hmmm? Perhaps laid down in an outside storage compartment? Roll in / out horizontal? Specs of the 100 ah 48 volt EG4 battery is 109 lbs. I would also have connections to EG4 inverter/controller for my Onan generator and truck alternator beside solar array. Feasible to have those easy quick disconnects? Guess just nut release?

[@adamosman4185]

It's really amazing, so can I use this to my house as regularly I am ever day as normal electricity.

[@josephsmith7026]

I am still looking for you to show how to set up the proper solar panels to charge this system. The solar power charging is the main feature I want to have. Also, I would like to know how long this setup would actually run that air compressor before the low battery cut off would stop it until it was recharged. The quality of an item like this to me is 1) What devices will it run and how long 2) Total cost 3) Being able to run and continue to run the invertor with a solar panel input as long as the sun is out of course

[@lts30000]

Vt. X amp = Wattwstt You do math. Not my work or study V x A = W

[@theartofplumbing]

Very down-to-earth and straight forward. Great video, awesome teacher

[@douglasmontgomery6315]

Maybe, if you can find it a power strip with 20 amp capacity that also has USB ports built into it. If not, then just go and buy a good 110 small charger that has PD for USB-C & USB-A

[@VonFowler-fw3yh]

I might also mention that right angle brackets could have been used to mount the box to the strut. Right angle brackets come in different hole varies, example: 1 hole in one side and 2 or more holes in other side of angle bracket. The extra length can provide more support and stability and permit different places for mounting to the box.

[@migmigjohnson6083]

I have this same system running in my RV. You can power a 15,000 BTU Air Conditioner without soft-start. The Growatt is kind of a power hog though.

[@omicron0mega]

That's actually badass for people that use camper covers / need a small package.

[@ecobluefarms223]

Wow THIS LOOKS NICE I’m a newbie and have put together a 100 watt kit this weekend Just to get started I’m ready to make sure I step UP and this is very affordable I’ll probably go with this exact build THANK YOU

[@VinceBadovinatz88]

I think it's a very good build myself there's other inverters out there but I'm starting to like the grow watt.

[@johnpaulcostanzo8262]

Hello from Australia. What an amazing set up !

[@buddysteele8220]

I really liked your video. you made it look so simple to put together. I want to build one for myself but I would like to know if you would recommend any changes to the hardware you used from the time you made your video, and what is available now.

[@bow.9496]

Those lower bolt holes on the inverter had solid steel around it for sturdiness. Those you drilled were surrounded by other holes. You’d probably want to use at least a 1” washer or greater on those bolts.

[@eweme5225]

Really nice. Also perfect for a construction jobsite. No need to erect a temp power pole etc.

[@termiterasin]

tinning the ac connections helps make insertion easier

[@loucinci3922]

Well doo)e. I like the double use of the power strip for input and output. Same thumbs up on the Anderson cable. Nice ideas there. I would like to see a framed box at the foot of dolly for the battery to rest into. I fear a big bump may allow latteral movement with risk the battery may pop off the dolly (small chance but not zero). Or maybe double sided tape? Super build. Good price. Thanks for sharing

[@leelucas690]

Or a Ratchet Tie-Down Strap.

[@peterbeyer5755]

Can I suggest that, - prior to trimming the U bolt that you thread a bolt onto it and use the bolt to even out any issues with the thread when you take it of - some washers and spring washers will make it more secure - hose clamps instead of plastic ties, - a rachet strap on both the inverter and battery when wheeling over the rough stuff.

[@gregory4154]

Nice build out. This is actually a deal. Solar generators are already starting to increase in price.

[@LithiumSolar]

Thanks. And yes, everything is increasing in price unfortunately... I just ordered several feet of #4/0 cable last night and had price shock 😧

[@VonFowler-fw3yh]

You can use back to back struts. They make pipe clamps that will fit the diameter of the dolly pipe. There are several ways to do what you want done by using different types and sizes of strut. Ask for the product book that will show all the pieces made and offered by the strut co. If you dont file the cut ends there are or were end caps available. It was cheapermost of the time to have both ends dipped in a rubber coating. Go to electrical supply house for material and if you're lucky the sales department guys will give you help and lots of ideas.

[@johnmauthner8857]

Recommendations: 1) To avoid voiding the warrantee by drilling through the cage at the bottom of the Growatt Inverter, you could have made a custom aluminum mounting plate to make the attachment. One plate with 4 holes and added mounting hardware. 2) Advise the manufacturer of the design issue (flaw) with the mounting holes inside of the inverter cage at the bottom. They can easily add a flange at the bottom of the inverter housing, much like they did at the top of the inverter housing. I assume that the spacing of the slotted mounting plate at the top of the housing is spaced 16" apart for mounting with lag bolts to the standard 2"x4" stud spacing. 3) Explain why you placed a small piece of plywood between the handcart flange and the bottom of the battery (cell pack assembly). Question: 1) When will you provide a video on the interconnection of the communication ports of the cell pack assembly and the Growatt inverter? 2) When will you cover setting up the WiFi connectivity? This will enable remote monitoring without needing go manually check the system. The remote system should alert you to when the system charge is low and requires recharging. Note: In the past, I haven't commented on your videos mostly because I don't have the time, however, I do monitor your KZbin videos and am subscribed. I appreciate your efforts! Keep up the great work that you do! Go forth and do good deeds!

[@thomasmolnar1569]

Instead of using a single sided unistrut, Unistrut makes double sided unistrut and that would allow you to use spring nuts and pipe clamps to clamp the strut to the dolly and spring nuts with bolts to anchor the inverter.

[@hopehope938]

I am confused I have read at few times from page to page multiple times that Growatt Inverters produce heat and there needs to eight inches or more between all other electric components. I am no expert and I am also checking to components and looking for paint that is for high heat I am also looking in cement board and components to reduce the firer risk. I am also trying to understand if a extra fan or blower is needed to blow on the inverter to do reduce the heat build up. I live in a high desert valley on a ranch and our summer temperatures are high. If I am going to build a portable power station it needs to be water and livestock prof.

[@russlo5324]

Don't all inverters produce heat?

[@russlo5324]

How high is high? I belive that your issue with heat is not paint, or the small amount of heat the inverter generates, but more likely the air temperature. If I recall the recommended temp rage is from 32F to about 130F. If the air temp is 130+F at the inverter, a fan will not help cool the inverter. As far as water and livestock goes, most inverters are intended to be used indoors. Sol-Ark may have a water resistant solution for you, but it's big bucks. As far as heat goes, lack of heat can be a problem in winter. Batteries don't like operating at low temperatures. You might need to insulate them or provide heat for the batteries in winter. Lastly, KZbin is not your best one-stop place for advice on what equipment you need. Talk with some neighbors that may have solar and or join a solar forum or two. I'm sure there is a solution for you, but just like raising livestock, there is work required on your part as well.

[@photorealm]

I had considered making a dolly pack like you have before I saw your video and the components I wanted to use were exactly the components you used. I feel better about my choice now😊 With 1200 watts of solar panel connected to this system. How long do you guesstimate that system may run a 7000 BTU (about 6 amps at 120v) AC in Phoenix AZ (very sunny) ?

[@AGhostInTheMachine]

about 6.5 hrs if the unit is on full time?

[@mrhalfstep]

Great video! I'm gonna build one of these with a Harbor Freight hand truck. It has the plastic wheels that you mentioned, but I don't expect to be using it outside my house. I'm old and getting it outside and off my porch would be an accident waiting to happen. LOL I bought a 3 KW, 24 volt, All In One, rather than the 48 volt unit that you're using, and I'm waiting on delivery of a REDODO 200AH 24V battery with a 200 amp BMS. That's going to be over 5 KW of storage and, along with several 200 and 300 watt portable solar panels, should get me through any emergency power outage that I might encounter. (I live in tornado country) I'm thinking about using some cheap HF 1" ratchet straps to hold everything to the hand truck until I'm satisfied with my layout. (to be honest, if it works well, initially, it will probably never be "improved" with a permanent installation, if you know what I mean 😉) Thanks for the content!

[@J-Justice666]

Suggestion: Put your power outlets as close to the ground as possible (Obvious reasons). Use the entire length of your zip ties, especially on heavy loads -not just one turn and cut off the access. Don't waste the tie. USE the access length and double / triple / Quadruple the holding power of the tie. Put rubber feet on the D handle to help keep the dolly from rolling when you lay it down.

[@serversurfer6169]

I would also flip the battery over, so the terminals are closer to the truck, the positive and negative leads don't cross each other, and the breakers become easier to access.

[@J-Justice666]

@@ES-mq9ox you go around with your ty a couple of times before you set the tie..

[@J-Justice666]

@@ES-mq9ox Try it. And you'll see.

[@J-Justice666]

@@ES-mq9ox In addition to adding strength every rap puts less stress on the teeth that hold it together.

[@J-Justice666]

@@ES-mq9ox You're wrong. Take a 12 inch zip-tie and lock it off forming a loop. With your hands, pull it apart. Note how much force that requires. Now take another 12 inch tie (same exact kind) and do the same thing except double it over after you close it forming TWO LOOPS. Now try to pull it apart.