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Just some points of clarification here. I'm not asserting that people don't know these things, but some of the comments might suggest some confusion. Almost all of the lower amperage BMS's that we all use here are common port, as opposed to separate port. That means that the charge connection...

I think most people know it, but it is worth pointing out: People should completely ignore the voltage displayed on these cheap power supplies. Adjust the voltage with nothing connected to the power supply. Use a good, well calibrated multimeter when setting the voltage. I use a Fluke 175, but...

I have the very same crimper that the OP has linked to, but it is very hard to get good crimps on non-metric / AWG sizes without grinding down some of the dies, and even then results look kind of sloppy. There are also lots of reports of these cheapies breaking down after a relatively short...

Just about two months ago (mid-June, 2021), I started building the box. I bought a 4' x 8' sheet of 3/4" plywood, a 4' x 4' sheet of 1/2" plywood, and a 4' x 8' sheet of 2" XPS insulation. And the game was on. Here's the box with three sides and the bottom: The sides and the bottom were glued...

Well @toms, maybe he will be at least a little bit better at providing some justification (links, not just telling us we are stupid). I want to give him the chance though. I still believe (really, I do) that your long-baseline history using LiFePO4 should be useful to the rest of us. I'm just...

Got my box of 8 today. As others have said, the BH folks didn't go above and beyond with the packing. Right out of the box I checked the voltages on each cell. 4 were at 3.293V, 2 were at 3.294V, and 2 were at 3.295V. I wired them up in series and am currently charging the pack to 28V. I've...

And when that exact same on-site configuration starts fine with virtually any other battery (including a different model from SS) you would still say there is no issue with the only batteries that don't start the inverter? Seems like Signature Solar cycles between saying that there is an issue...

Read again what I said. I agree that Wh is the correct measurement of energy. Ah is not really a measure of energy at all. The problem is, there is not a repeatable way to measure Wh when testing a cell, because the voltage varies during the entire test. Granted you can, by measuring the...

Meanwhile, 27 posts and I'm not sure any of it advances the intended subject. Just sayin....

I finished doing the capacity tests on my 8 160Ah cells, and updated the table two posts prior to this one. All cells exceeded the 160Ah spec. Then I top balanced them, and now I'm building a box for them.

This thread seems to have gotten a little too polarized. Beyond what could possibly make sense. There are people who want to pay more for what they believe is a better cell. Good for them! There are others of us that don't see the value in that extra expense for what we want from the cells...

As I mentioned early, I was building a pocket area with a board to hold the BMS and Active Balancer. Here's a pick with that small board held in by a couple of latches that are usually used for window screens: Here's with the next layer of wall to define the BMS / Balancer pocket, and the...

So I grew up on a cattle / sheep ranch in Colorado, and I am a big fan of a good cheeseburger. I'm a regular at 5 Guys, Smashburger, and when I can find one, In-and-Out. God knows that at 63 years of age, I probably shouldn't like them as much as I do. I also have two adult daughters, and they...

Here's the box with the top on: Then I started working on the inside details of the box. The hinged panel near the top of the box is where all the electronics goes. Here's that panel in the down position, part way up, and all the way up: Then I started wiring the electronics: Here...

We were setting our 6 panel array at our cabin right where there is bedrock a few inches down. So we poured fairly large concrete ballasts, 1.5 yards each. The racking was from Snap-N-Rack, but that was 6 years ago so there are probably lots of choices.

My system is at our mountain cabin. It's DC coupled, completely off-grid. Here's a pic. The E-panel is on the left, and the Conext SW4024 on the right. The price seems to have gone up a bit since I installed it all a bit over 5 years ago, but at least it is $500 for just one box, instead of...

Under the top hinged panel is a hinged Lexan sheet that allows the cells to be seen but protects them from dropping tools and causing shorts. Here's three shots of lifting the top panel to expose the Lexan, and lifting the Lexan on its hinges. Here's a side view with both of the two hinged...

I agree with @Gazoo and @Just John but would add that you should set up your system so that your regular cycling is charging to something like 3.5V per cell (which will then settle to 3.4V), and cutting off at around 3V per cell. That keeps you mostly between the knees. Then you will never see...

Personal opinion, but "I don't know much about it" should not ever be in the same sentence with "is part of the order I'll be placing today." Best to understand it. The multiplus puts out 230V, but does it bond one of the two wires carrying 230V to ground? If so you have a bit of a problem...

I assume you mean the ECB-A40L (vs the EBC-A40L you said). I have the ECB-A40L and it has worked fine for me. Have you checked the cell (the 11th one) to make sure it is not shorted or dead? I'm not sure why it would go to 71A. I don't really have any suggestion, but I will say that I had...

Don't post the same question in multiple places. It doesn't help you or anyone else. You already posted the question here: https://diysolarforum.com/threads/is-it-ok-to-exceed-max-dc-input-power-w-by-250w.29356/post-352963

That is almost the identical pad as I used. I actually have two of them for my 8S 24V battery in our cabin in the mountains. I think it is a good one for your purpose. You may not have room, but I put a 1/4" aluminum plate between the heat pads and the battery. The plate causes the heat to...

Yeah, as @MasnPip said, the jewelry washers are not a good idea. They are too thin, so if you can manage to get them over the first 11mm pad and get them to make contact with the next pad down, they are too low for the bus bar to make contact. The very first oil pan gasket rings that I gave...

Like I said, to do a true top balance, you need to break up the pack and put them all in parallel. Then charge them at 3.65V (or 3.6V, or 3.55V if you wish), and continue until the current drops to near zero (maybe 1A in your case). A balance charger will try to get all the cells to the voltage...

Wow. I may need to write that one down, so I can use it myself! Of course, I'll first have to figure out what it means... :)

I just came back here to say this thread is now officially 14 pages of silly. I can't believe this goes on and on and on. Seems like book smarts would be useful here.