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An important question I am facing now is that I want to build my own batteries with a JK BMS and wonder if the CAN bus will communicate with the SolArk. Does anyone have any insight on how the CAN or RS485 communication is structured in either of these devices? Does the SolArk request the...

Your sources mentioned, but didn't elaborate on the material shortages that are the root cause of the microchip shortage. Mandatory shutdowns definitely had a huge impact on everything, but the highly automated processes of the semiconductor industry should have been easy to meet social...

I was just looking through the website and saw this. Haven't dug into it yet, but I assume there is an output signal that will accomplish the rapid shutdown. I don't really know why that would be required if I'm going to have the power routed into the house in place of the grid when the grid...

Yes. It is a flooded battery and sulfuric acid is definitely corrosive. The camper hadn't moved in months, so there was no splashing. The battery is well vented which allows humidity in. I'm not sure I can agree with you that the acid is the dominant factor. If you look closely, you will...

I would probably use a keyed locking insert to repair that. These are cheap and have a Zinc phosphate coating. Hopefully this will prevent your aluminum from being the sacrificial element. Drill VERY carefully. Definitely use the stops if you have a drill press...

I reached the end of the rope on my BMS. July 1 was the last date they gave me for delivery. The tracking numbers still say "departed original country" after having been "received by airline". I filed a dispute with AliExpress. I don't know if they will eventually be delivered, but I now...

I always laughed when I saw the solar panel kit at HF. Just having done research on solar panels for my home, I could tell that the panels were too big and heavy to be quality products. Thank you @PatBlack for sharing your experience and confirming my suspicions. There are several brands of...

When I asked why the extra charge, I was told that my credit card charged a 2.95% fee. Were that true, it would have been a separate line for a service charge on my statement. I'm thinking it's their charge for accepting a credit card. Just like many gas stations charge more for credit than...

No. I wasn't able to get definitive answers. The best I got was someone telling me that they are JST connectors. That is probably true, but JST has several series of connectors. I haven't searched for which one it is. I'm not sure it would work in the end anyway. The baus rate on the BMS...

From what I have read and the DG guy told me, the 25g limit is per cell. That's why I used the 11lb cell and not the 44lb package content in my post. Statute 173.185 section (5) (c) (iv) states that transportation by highway or rail only lithium content may be increased to 5g for cells or 25g...

What's not to like?! A visual representation of your battery status, charge and load values makes it very quick and easy to know if your system is doing fine, or in trouble. It seems like a lot of work to get there, but I see the value of being able to assess the status in a couple seconds...

Mounted! These guys are doing a very professional job, but also very friendly. Letting me pop in and ask questions about everything.

Good information. The team I'm working with should be on top of that. I'll ask. Getting on my roof during a fire would be futile. Metal is going to be the last entry method that would help. Better to try to knock out one of the hurricane windows. Not much easier, but at least you're on...

After a bunch of research and digging around, I settled on the Heltec 200A BMS. It has 2A Active balancing capacity and CAN bus. Will it be compatible with the SolArk protocol? Who knows?! I learned that the SolArk doesn't require communication with the batteries, for it to display better...

@Hedges and @BobH, you have both given me a lot to chew on. I should be having the site survey soon with the installer. I'm sure they are up to date on the code. I sent them an email tonight to work with me to be sure I can be here to walk through it with them. The wind should not be a...

At 1mm pitch, that is 6 threads which is twice the recommended engagement for a fastener that is used as a rule of thumb for mechanical engineering.

I've made half a dozen transactions on Alibaba. I have had no trouble whatsoever with using either a credit card or a debit card. My 2 orders each have an extra $45 added to the price by Alibaba. It doesn't show up in the invoice, but was charged to my account. Emily is checking in to it. I...

It depends on how much current you plan to draw. If you are going to run 1C charge/discharge on a pretty constant basis, its a different answer than if we're talking maybe 0.5C maximum.

Have you considered using TECs? A Thermoelectric Cooler works both ways. Depending upon which polarity you apply the power, it will transfer heat either direction. You'll need more heat sink though. You could probably use the TEC and run your fan across the heat sink to distribute it to the...

Now, THAT is starting to look like the SolArk 12k! Only available in 3-phase though. SolArk definitely must have exclusive rights for the US market. Looks like Deye is edging as close as they dare.

I don't see any evidence of an insert. I'll look closer when I get home.

I was just in Delray Beach on Friday. My dad lives down there. We have a little mini camper, so I think these are a little too big. I wish I had a use for them. It' sounds like a good deal.

Your chart seems to be at odds with everything I found when I was researching ampacity of bus bars. Most resources indicate 1.0A per mm2 of aluminum, and 1.6A per mm2 of copper. Im not saying that you can't run 250A through that bus bar, but I'm pretty sure you are going to have a temperature...

I can't disagree. Maybe abuse is a little strong if a word, but you get my point. I do have to disagree about the bus bars i received with mine. They were only about 0.090 thick and were not even as wide as the terminals. No way they make it to 200A.

Having a long career in electronics, and following solar power systems for almost 15 years, and I have seen transformers fail just as often as other electronic parts. Sure, antiquated technology is beefier, but a properly designed system does not push the FETs near their limits, and they will...

I think it would be very easy to over torque the bolts with those. It would also make it difficult to get a torque wrench on the bolt to set the torque correctly.

Sounds like pretty standard capacity testing. Do you use any special equipment or provide reports? I ask because, as a test guy, I plan to use a data logger to plot out the voltage and current and maybe a temperature when I check out my cells. How much difference do you see when you use...