Yellow Measure

Where are the pics? We have a section on the forum for members' installations...

The $100–150 range is for the US. See my second post -- it states that it is vastly different in South Africa, resulting in some people actually having to pay the recycler 😦 Fully agreed.

It may be best to stick with the RSD port. Or incorporate a small 1-1.5A 12V PSU on the UPS load side, more extensible solution, because you can use it to drive some PC cooling fans as well.

Looking at my own spare Solarman dongle to double check: It states Model: LSW-3 Input: DC 5V - 15V 1.5W

The 9 pin RS-232 port where the Solarman stick logger or Sunsynk logger plugs into, gives 12 V. Pin 5 = 0 V (GND) and pin 9 = +12 V. The power rating on the dongle is 4W, so it should be good for 330 mA max. Edit: I thought that the ESP32‑C3 runs on 3.3 V? Are you going to use a buck converter? In anycase, the current draw of the ESP32-C3 is 1.7-2W so it is within spec.

Hello and welcome. What country are you posting from? What is the make and model # of the batteries, and the inverter? How do you know that the DIP switches are incorrect? Is there no switch on the batteries? Even a soft switch? Can you share a photograph? How do you know that the comms between battery and inverter are working or not working? In a setup where there is BMS --> Inverter communications, the inverter obeys the commands of the battery BMS, not the other way around. If the battery SOC drops too low, then the inverter is either not following the directive from the BMS to cease discharge, or the BMS has not issued it. The BMS can also issue a charge directive to the inverter, demanding that it charge the battery if it gets too low. Please provide the make and model # of the batteries, and the inverter, so that people have the information that they need to assist you?

Ja, those JA Soar panels are well-behaved, under the 13A limit so no clipping / inefficiency. Agreed that, if you had the North-facing space, you would want to place them there, it's by far the most efficient. Then again, if you have an east facing roof, you may want to consider some on the East as well as the West side, because it then also extends your generation time every day by 2 hours instead of only one.

Kynee is a huge company in China, they even white-label their batteries to other manufacturers. I recently purchased the Hina ESS PowerGem Max, at the time I new nothing about Kynee and I assumed that they were new entrants with no track record, that's what steered me towards the Hina. Imagine my surprise last week when I discovered that the Hina ESS is basically a white-labelled Kynee! The Hina ESS (Kynee) has excellent build quality, packaged very well, and the documentation that comes with it is glossy and superb. The Hina app is not as good as the Kynee one though, there is far more information and settings available on the Kynee app, so the Hina app in comparison looks a bit "dumbed down". I guess that it's OK if you don't want to be in control of everything. Had I known what I know now, my purchase decision would have been different, and I would have benefitted from saving a few thousands of rands buying the Kynee.

I think we need to stop here, before the Mods nail us for making them spill their hot chocolate...

The Coulomb Counting is a separate field of study entirely, reserved for the PHD Program at Buttery University 😆

LOL. That's reserved for those that have a Masters Degree in Cycle Count. 😆

I think that you are onto something, and I like your approach, but words matter. Raw material value would be the input materials at the Pylontech factory, before they assemble it, test and put it on the market as a brand spanking new battery. Salvage value would be the value of the battery after someone has used abused it by applying "a few high voltage charges", and it swells up like a marshmallow in a microwave. I asked Grok, who gave a detailed, interesting response: So it turns out that chemistry, condition, location and volume are relevant (no extra dollars for the marshmallow ones!). Hubble AM2s are NMC, Pylontechs are normal LFP. And remember: this is in the US, where they have recycling industries that can leach the chemicals and re-use them, not South Africa. So I asked Grok again, this time specifically Pylontech US3000s, and the response was that in SA, one would basically have to pay the recycler to take it away 😄

The batteries were abused, all 3 of them.

🫨 Don't try this at home, folks.