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What is the consensus of those that have received the cells? Are they new or used? (I apologize, but 36 pages of posts is just too big to rummage through. )

As stated in the title, I am looking for an MPPT. I am already using a simple relay to connect/disconnect the panels (Electrodacus DSSR20). I am interested in both comparing with the MPPT to see if it gains anything and also running 2 panels in series which would double the voltage and thus move...

No, I ended up making my own BMS. See the Taves BMS here. My understanding is that there is a way to update an SBMS0 to have a better wifi solution. You should check the electrodacus website/forum. Not me

I've wanted to see the voltage rise in action. My BMS is getting more and more capable with respect to giving me the tools to view this stuff in action. Here's a screen shot showing my 8 cell pack with a 27A charger attempting to bring the battery up to 29V. Notice, it takes 1 minute for cell #7...

Sold! If Dacien mentions it, and it's $180 on the evil empire, I'm happy. But wait, there's a whole series! I can get the RSP-1500-27 (56A)! so double the amps for 50% more. Nice. (I had trouble finding it in the manual because he does not mention "meanwell" or "mean well".) Thanks

Status and thought to hopefully get some feedback from this community: First, note that I am using it right now on my 24V 280Ah pack in my RV. So plenty is working. Hardware: I can upload the files necessary to order the 2 different types of boards from JLCPCB and the software needed to program...

Nope

There is an IC on the cells that supplies 1.25V for Vref (previous post has a URL to the circuit) I reviewed other options brought to my attention on this thread and started working on one, but found the complexity, cost, and power consumption rising to the point where it made no sense to me...

I figure I will post back here when I have more info. I am saying the default behavior is as an AP. You connect to it and control it via your phone, tablet, computer. No LAN is needed. However, you can then flick it to be a client on your existing LAN if you like. This solution means no...

You write software on the ESP32 that makes it a web server. Then you use a browser from any device to see that web page. That way you are not tied to an iOS device. You can make a custom iOS app and there are lots of examples to help with that, but those examples will have nothing to do with...

I could be wrong, but.... The LiFePo4 cells have near zero resistance, this means that they are basically determining the voltage not the panel. Sure, the panel has an open circuit voltage that is too high and Vm is too high too, but the batteries drag that down to their 14.4v (don't quote that...

I liked the epiphany that the more you want to tilt the panels the less you need to also rotate them with the sun. If you are high in latitude in the winter, then the sun rises in the south east and sets in the south west, so just rotate them to the south, but angle them towards the horizon. If...

I don't see the utility of this. In my setup, as an example, I have at most 60A of solar. So, yes, my solar will snap off when the batteries (280Ah) cannot accept more than 60A without exceeding the 3.5V setting, at noon on a perfectly sunny day. This might snap off charging before my goal of N%...

I don't know, but since it is so easy to do with the system I am making, why not? Users of my system can set the parameters to operate like the typical BMS if they want. I see no point in running the battery to 100% every day, just like I don't charge my Tesla to 100% unless I am going on a long...

I put a wifi router in my RV so that I can attach a better cell antenna, use a cheap security camera for the backup camera, and have my tablet for google maps. I never look for external wifi's to attach to. However, I agree that is not a solution for all. But it was fun. But I do get to watch...

I am going to use the electrodacus bms too. I have a victron multiplus compact 24/2000 which has a position switch for off/charge/invert+charge, which means I cannot control the charge separate from the invert. Which means I will be selling it. My plan, so far, is to get a mean well RSP-750-27...

I apologize but that's the only reason I know for balancing, and that provides no rationale for needing less than 10mV of measurement accuracy. If you had continued to read that posting, you would have spotted the following: Notice, that I have recognized a new reason to balance, and I am...

It is a low frequency beast. It has a nice big round transformer. It is a heavy unit. I am going to do that but am hoping to get some "architecture" description help. I mean something that describes what I'll find at the input side and output side and what, if any, these input capacitors will...

I used normal zinc lock washers because I read that zinc is closer to aluminum than stainless. They certainly feel firmer and I did not strip anything when I torqued to flatten them. I also realized that I did not read the noalox instructions properly. In my first attempt I sanded the bar and...

That's what I use. I don't use the diversion, but I do have my BMS turn on the water heater when the batteries are above 90%, so I have the poor man's version of that. Oh, that's a bit unfair. I find that most people have not really questioned the MPPT. I had an exchange on another forum where...

I apologize for using sarcasm in the post that you have replied to. I should have been more blunt as follows. You have failed to comprehend what I am doing and how I am doing it. Unfortunately this makes your comments irrelevant and worse misleading for other readers. Thank you, but frankly...

I am manually balancing the cells. I have not written the automatic algorithm yet. I figured I would do it manually to make sure I knew what to do. Note, that I am not using a charge controller at all. The BMS disconnects or connects the solar panels to the battery. The only benefit to balancing...

I used aluminum bus bars and aluminum threaded rod for the bolts. I used an aluminum lock washer and torqued them finger tight with my socket. This flattened the aluminum lock washer, but I am not sure that this is good enough. I was hoping the lock washer would provide some spring action, but...

Those are excellent points. Thank you for taking the time to think through, and explain the rationale.

Ahhh, I see. But still the different sizes all seem to look identical. Are there differences that can be seen between the different manufacturers, or are they indeed from the same factory?

180 degree F engine coolant? I think not. Use glycol (or whatever is used in engine coolant) as the transmission medium of the heat? Sure, but how is that heat added or pumped away?

I got tired of wires so I designed a new cell board to fit the a cell and transmit the data to the controller via bluetooth. I have not gotten the boards, so I have not been able to program them and verify they work nicely. There is just one connector on the board, besides the bolt holes for the...

OK, but that still begs the question of what that heat source is. Fans are nice, but not a heat source. If I used a X watt electric heater that was designed as a fan, then OK, we need to blow that through the batteries. On the other hand, why not use an electric blanket and stick it on the...

To answer my own question: Yes, inverters generally have big capacitors on the input (DC) side that should smooth out the current. There should not be any significant amplitude of a 60hz signal on the DC side. My inverter must have some failed parts.

It came from the inverter referenced via that alibaba link above. It is certainly an LF unit. Also, it is the same bread loaf sized unit as the others I mentioned above (ampinvt, sungoldpower) and the signineer. I don't see how 20ms would make sense for any inverter, now that my head has been...