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And to keep on topic, here is my recently completed panel mount. It is 100% scrounged tube and hat channel plus some large galvanized angle for the base that sits on top of the concrete shelter. It is held to the shelter lift rings with steel cable. Each row of panels tilts from 0° to 50° in...

Great idea, @Will Prowse ! Everyone's systems look great! I'll go on your Snipe Hunt. 100% off grid gazebo on a lake. Big system in the storm shelter provides 4,400W of 240VAC for deep well and mini split in gazebo. Little system in gazebo (not shown) is 12VDC 24/7 for a fan in the...

Here you go. You can see the door hinges welded at the tops of the vertical pipes. The top side of each hinge is welded to the cross bar so the cross bar and drilled plates tilt with the panels (about the hinge pins). The tilt is set by bolts through the pipes and drilled plates. Easy enough...

Does this qualify as seasonal renewable energy storage?

OK, so I got the first compression frame completed. This is the 4S 230Ah pack with one 1/4" sheet of Poron 50-15250 foam as a compressing agent. You can see the separator sheets from Docan sticking up between the cells. The sides and bottoms of the cells have extra material to keep from...

I would like to publicly thank Pete Thompson at Morningstar for resolving my issue in the absolute best way possible. TL,DR; Morningstar Technical Support has the ability to do what they need to do to solve your issues, including replacing your ancient hardware! Thank you, Pete! The...

Having just joined the forum, I will admit that it stunk reading all 36 pages of that thread. But I recommend that you do so because that particular oyster contains several pearls. I saw many places where people couldn't do math or physics or much of anything except post incorrect information...

Oh, yeah, here is one of them. The two BMSs came with 4 gauge aluminum cables. Those are getting swapped to 2/0 with everything else.

This one holds 32 230Ah cells with springless compression frames. Each frame holds 8 cells so I can lift them if needed. Room for the BMSs on a board on top of the cells. It was a bit pesky to complete the wiring that way and not drop a wrench on the cells, so I printed the red covers and...

I ordered 36 230Ah cells from Amy Zheng at Docan. I paid on 15 April, they shipped on 22 April, and I received everything by 27 May. That's five weeks shipping from China to Florida, including several days on a UPS truck across the USA. I bought the 36 cells, three JBD BMSs, and 36 flexible...

All I saw was a bunch of crusty jokes.

The general solution to varying emissivity is to stick a piece of black electrical tape on the object, then use the IR camera to measure the temperature of the tape.

About 10 PM Central Time in NW FL. Not much color, but it seems to be there.

Handing out insults is certainly a way to get good help. The fact that a device doesn't fit your (rare) use case does not make it poorly designed. I get that you want to find a cheap solution, but belittling equipment that doesn't work for you is rather absurd. Are you willing to work a bit...

Stainless is generally a poor conductor of heat. Nickel silver is much better. I struggled with this problem and was able to solve it with a storm shelter cut into a hill. I know you can't do that directly, but perhaps you could build up a sand hill that will drain well. I have my panels...

I have done plenty of "shade mitigation" with a Stihl MS-460 chain saw. I wonder if I could patent that?

Please don't ever put Florida in any group with Chicago or New York.

More insults.... I was going to provide more information that might help you, but that would be crazy. The military specifies the standards they expect their products to meet, then they pay for a product to meet those standards. You don't seem to understand that you are asking why everybody...

18650batterystore, perhaps? https://www.18650batterystore.com/products/eve-lf280k

What? In the jokes thread? He's missing a big solar panel overhead to provide shade. He'll get a sunburn walking around like that.

You are missing out on the Zen of welding. Keeping a decent bead while shaking the slag out of your flip flops is only possible by clearing your mind and becoming one with the process. These flip flops recently broke, but you can see the small round holes from slag dropping into them while...

OK, so I bought the Poron 50-15250 sheet from McMaster. I used the chart provided by the manufacturer to estimate the compression for my 4S battery. I have cut most of the parts for the frame but have not put it together yet because I have not drilled all the screw holes. This battery will...

I am glad to hear that you are doing better, Steve. I'm watching my 95 year old mother go through dementia and a failing body, so getting old isn't always the best way either. Going out like Clint Eastwood in "Gran Torino" wouldn't be the worst way. This reminds me of my favorite morbid joke...

Here we go again! I tested the 0.25" Poron foam and found that one sheet per four cells is what you want to use for cells that specify ~12 PSI compression and up to ~0.5mm expansion per cell. I used one sheet in my four cell battery and two sheets in my eight cell packs. I am confident that...

Yes, these people need to conduct themselves better. Perhaps they need less resistance to good jokes. More power to them in the current situation.

People keep mentioning class-action. Forget that, sue them directly for lost power, spoiled food, time dealing with it, etc. and let the judge join everyone as a class later if he cares to. If that was really DEYE that posted in the other thread, they admitted culpability. I also think it is...

Holy cow. We keep our central AC at 78 during the day and 76 at night. We have found that AC makes you soft, so we compromise and keep the humidity down during the day and sleep well at night. I'm usually nekkid with one sheet halfway over me, and my wife has on jammies, a sheet, and one thin...

I have had a rain barrel for years at our lake camp. It is filled with water from the gutter and then filtered through a 20 micron and then .35 micron filter. We don't drink it, but we do use it for hand washing and other needs. I came across a very ingenious way to keep from filling the...

What did the pirate say on his 80th birthday? Edit: Yes, I realize that this is the joke that started the whole thread, but it's good!

Have you considered firing the people who made those rules? I guess they are probably the same people who think that protectionist measures such as taxi medallions are a great idea. Why is it important that you be licensed if your work passes inspection? I am sure that the dudes pouring...

When you poke your meter around at it, be very careful. The specification sheet for the YMGI Solar mentioned above clearly shows that the input DC has to be between 250V and 400VDC. It also shows that the power supply is 310VDC. At those voltages, I'm leaving the hood on my mini split.

Adding things that increase frontal area will almost always increase drag. You can reduce that added drag by shaping your addition. The best way to reduce drag is to hide your extras behind the primary frontal area if you can. The idea of a "hump" is good since the air has to move up and over...

I think the camel already tried to stick his nose under that tent with "The Affordable Care Act." The government told people that they were required to enter into a private contract with a business (buy health insurance). That part eventually got repealed, but I'm not sure how it all played...

Here is my take on what happened (note that this is speculation, but that is all I have seen on this thread anyway): - SolArk fussed at Deye for selling their brand to the US market, in violation of their contract. Evidence of this is the Deye advertisement posted a few pages ago that clearly...

My BS flag is flying fully erect on "cons" two and three. For number two, you would build a pack to fit your application, not try to shove some random pack into it. Besides, my compressed pack only takes about 1/4" more space than if I had just built a tray for the cells to slip into. Poron...

Answering threads with a non-answer just to get them "answered" is not productive. It is far better to let them cook for a few days to see if they get a legitimate answer. If not, then bump them with a non-answer.

And to be honest, the yeast they could do is leaven the situation with better jokes.

Run away. Nobody makes a 310Ah cell. Just shipping on 32 cells from China should be several hundred dollars. Expect to pay roughly $4,000 US for 32 302Ah (EVE) or 304 Ah (CATL) cells delivered.

If you have a tractor available, you can pull your wire or conduit directly underground using a modified subsoiler blade. I pulled 120 feet of 1-1/4" conduit 20" underground with my small Kubota. A few passes with the blade alone to cut tree roots, then hook up the conduit and pull it in one...

I found a patent document for that generator. The V3 model has a continuous ramp. You set a ball at the top and start it rolling downhill and harvest the free energy. His first model used a staircase because it was easier to build, but the output had voltage spikes due to the ball dropping...

They are generally not numbered, but yes, they go in order on the connector.

Bananas are made in thirds.... Over here liquor and wine is now sold in 750ml (not 75cl) bottles (~25.4 oz), which is conveniently close to "a fifth" or 1/5 U.S. gallon (25.6 oz), which was the standard size before they realized they could swindle us out of ~0.2 oz of spirits by simply...

You say 200Wh per night at 24v, so that's maybe 8.3Ah per night, so that's about 1 Amp over eight hours.... Your 1 Amp at 24v is 2 Amps at 12v, leaving only 1 Amp for charging your battery while you are using the device. That now would be ~100 hours to charge from dead empty to full, so just...

I estimated that from one day (19 November) of your data, not your profile. Time of sunrise and length of day are really all you need. More days of data (and better resolution) make the estimate more accurate. The point is that I only needed your solar data, and not your IP or howling dogs or...

One more time... more cells will not create more pressure. They all create the same amount of pressure. If they are constrained in a rigid case, they do not expand (they physically can't). What would be expansion is converted to pressure by the rigid end caps. The end caps and all of the...

And my favorite: A pirate walks into a bar with a steering wheel stuffed into his pants. The bartender asks, “Mr. Pirate, do you realize you have a ship’s wheel in your pants?" The pirate replies,

This is what I refer to as a Confessional Debugging. It starts with, "forgive me, brother, for I have coded." The colleague does not have to be more experienced. It could actually be your cat or dog. All you have to do is explain your design to something else and think that it is listening...

I agree with everything you said, except that I think that every forum member (of any online forum) has a duty to spend the money of other forum members. That is truly the reason that people join forums; they can't figure out how to spend their own money! OP - Remember the tips from...

I think the "takes time" and the "low quality" labels are swapped in that image.

Some disclaimers: Like @AndyRonLI and @curiouscarbon both said, this should be taken for its entertainment value only. You are getting free advice from your "best internet friend" who is neither an aerodynamic engineer nor a structural engineer. Do not mistake any of this for actual...

I usually search for the main author's name and a keyword or two. Eventually a PDF will show up.... The PDF download link worked for me. https://zh.booksc.eu/book/23466390/628175

I suppose if you directly read Chinese you might have understood that. When I bought my cells, the only mention in the specification sheet was, "the battery under 300kgf fixture" and nothing more. Discussions here indicated that one of the members here contacted EVE and was told that too much...

OK, so the bigger one just finished. It looks much better to me. Keep in mind that this shows air velocity and direction, not pressure, force, lift, or anything else. Also keep in mind that this represents less than one second of "reality." The RV instantly appears in the air, and it is...

I think panel voltage and time might be best. That way you aren't looking at what the SCC thought of power available, just what the panels think about the amount of light on them.

Or a Sawzall. I'm pretty good at fine cuts as long as I have a decent blade.

I am pretty sure that JBD offers several options in the 200 Amp neighborhood.

Those are "DataMatrix" codes, not "QR" codes. Your "Cell 5.jpg" image decodes as "0B5CB37M55A33LBAC1000497", so it looks like the code is valid. It also looks like you should interpret it bottom line first, then top line. I put the decoded string into the LFP decoder at...

It looks like you will get widely varying answers here, but I would discharge them before removing them from compression.

I seriously doubt that would happen. Any excess voltage applied on one leg would be generated on the other leg by the street transformer acting like an autotransformer. I'm not even sure that you would be able to tell which leg had the extra voltage applied.

The cause of inflation is expanding the money supply, which devalues the dollar. The $3T spending spree a few years ago caused the current inflation. Politicians get away with blaming it on other things because it takes several years for the effects to trickle down to ordinary people.

Being obese on the left side affects health. Being obese on the right side doesn't. I just needed to clear that up for you....

What is so hard about installing a minisplit properly so you can sell it with the house? Drill the holes, install it nicely, be done. How do you know you will need a minisplit when you move, anyway?

This is what Bluetooth Monitor sees on my phone: The Overkill app sees nothing. The XiaoXiang app sees the BMS just fine.

I don't see any reason a fifth of liquor couldn't be labeled as 756 ml for export. Many companies have changed to slightly smaller packaging rather than increase prices. I agree. I routinely have to convert units to and from metric, so it doesn't really bother me at all.

Except that you can't get 40 gallons of hot water out of a 40 gallon tank. The incoming water cools the water in the tank, which means that the element begins to heat again as soon as you use even a gallon. Unless you have enough element to keep up (which is usually not the case in a tank...

The ultimate "stupid tax" is your state lottery....

This is correct. The BMS knows each cell voltage by differencing measurements. The BMS needs to see each cell in the correct order, so that each successive lead increases by one cell voltage. If you put the leads on in the wrong order, the BMS will calculate the wrong voltage for some cells...

This is just protectionism. That and an apparent desire to feed your local mechanics. I won't own any of the three due to maintenance needs. Once you figure out that a Toyota just keeps running, you tend to quit looking at other brands.

If you have hens for eggs, you really don't want them getting broody. A lot of varieties are kind of brood resistant, which means they really don't care to sit on eggs. If you don't have a rooster you won't have fertilized eggs anyway. Trying to hatch eggs is for the birds, and can be very...

Not really a neutral on the grid, but it would be a problem if the neutral disconnected at the transformer or service entrance to the house.

I bought a used 2X10 gang disc from a guy in the country about an hour from me. I brought my "little" Kubota L2800 to make sure I could pull it. After I tested it and was writing a check, I commented that I had finally figured out that anyone over the age of twenty really needs a tractor if he...

Pure copper is very soft and will not allow you to apply much torque without twisting the bolt off. Like @rhino said, use stainless bolts.

This is a decent description of the way my wife sleeps. I keep telling her that she wakes herself up because she isn't breathing right. Once she wakes up she starts thinking about things and can't sleep. Then she is tired in the afternoon and takes a nap. I figured out a long time ago that...

A more precise explanation is that the driver is there to limit the current provided to the LED. LEDs are current devices, not voltage devices. As long as the the voltage exceeds their bias voltage, they will light up. Most regular LEDs cannot take more than about 20 mA of current. The high...

Cost, mostly. One 16S battery at 280 is not quite enough capacity, and two is too much money. The per Ah price of 230 is about five percent lower than 280, so it made sense to me. The redundancy is a bonus, as is the doubled current limit.

"Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read." - Mark Twain

Interesting how the video shows the bottom battery at lower current both times he measured, and he glosses over it as, "maybe one or two percent." Well, one amp out of twenty is five percent, e.g. (19-20)/20*100 = 5%. Yes, his bus bar is working, but in his installation it should probably be a...

By closed, do you mean open, e.g. it isn't making contact? That would be the only reason you aren't able to charge that bank. If it is closed (making contact) you should not have a problem. True, but I don't think we are sure what the problem is yet.

OK, it is ITLAPD and I haven't seen any pirate jokes. I'll start. What happens after a dry spell at sea?

Why couldn’t the pirates play cards?

Why doesn’t Captain Hook play poker any more?

How do pirates know they exist?

Why didn’t the young pirate go to the movie?

They don't need anything more than your solar data to tell them exactly where you live. See the "other" thread for an example.

He quoted freight cost for 64 cells. That seems very high to me, but this is the new world. If it is a single pallet, an LTL truck line might be much cheaper.

What is a pirate’s favorite restaurant?

What is a pirate’s favorite letter?

This is completely dependent on initial charge current. My 48V 460 Ah battery (16S2P) is intentionally underpaneled because I don't need the batteries recharged in five hours. Three or four days to recharge is fine with me after I use the system on a weekend. My panels cannot produce 0.05C at...

This is exactly why I am watching this thread. I have a three ton water source heat pump that is rated around 22 SEER, but I have been looking for ways to solarize it. It looks like the best bet for me is a 9K BTU in the bedroom and maybe a 12K BTU in the living room. I would just tell the...