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  1. Haugen

    DEYE Inverter UL Listed available in US

    I ended up just telling my phone to forget the password. There are not a lot of computing resources inside the box. An external Wi-Fi dongle ports CAN bus data to a website. Have you watched any of the videos where people hack the CAN bus in a vehicle and start tinkering? If automakers...
  2. Haugen

    DEYE Inverter UL Listed available in US

    My money is on security as the main reason. When a port is opened for communication, there is now a risk of malware or other intrusions coming in that way. I know that after I set up my WiFi dongle, my phone kept connecting to that every time I came home because it is closer to the door than...
  3. Haugen

    Avoiding Galvanic Corrosion

    I'm adding in high density foam 1-2mm thick between the cells to compensate for the expansion and contraction of the cells as they charge and discharge. The full range is only 0.5mm, per cell. This means very little relative motion from one cell to another as long as they are properly compressed.
  4. Haugen

    Sol-Ark Inverters 8 and 12K

    I read on the forums here that the Seplos BMS are compatible with the SolArk. I'm planning to try one, but haven't got around to buying one yet. They had a max current of 100A, but I have seen higher current ones lately. I don't want to be a beta tester, so I'm waiting to be sure their...
  5. Haugen

    DEYE Inverter UL Listed available in US

    Here's the post in this thread directly from a member of the SolArk Management team. I have no reason not to believe them. I talked to him about my SolArk before I had it installed. Most of what you are saying is hearsay and I have no idea who you are. The fact is, they are pretty...
  6. Haugen

    DEYE Inverter UL Listed available in US

    The reason you can't find them in the US is because SolArk owns the design and prohibits the other brands that they allow to produce them to sell in other countries, just not in the US. It's an IP issue. If you put significant resources into designing a product, would you just let the factory...
  7. Haugen

    This could be interesting

    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...
  8. Haugen

    This could be interesting

    As we spend trillions of dollars on cheap Chinese solar panels, we keep all of the Chinese factories operating. In the meantime, solar manufacturing elsewhere is going down the tube. When the tariffs level the playing field to compensate for the Chinese government subsidies, North America...
  9. Haugen

    Sol-Ark Inverters 8 and 12K

    I completely understand. I'm thinking that you can communicate with your BMS via CAN since it won't talk to SolArk. Then, monitor your PV in and AC in/out for the rest of the picture. I know it's extra equipment (ie. Cost) but you could get better data that way. Not terribly difficult to set...
  10. Haugen

    Sol-Ark Inverters 8 and 12K

    I don't think I would label using the cloud (internet based) data stream can be construed as "Big Brother". Maybe you need to read 1984 again. Encryption means that your data is yours and cannot be taken from you for any reason. Not even SolArk could break it. It's not nefarious, just...
  11. Haugen

    Tell me about SolArk.

    My cost would not have changed. I had a set cost for the full install and the RSD was on the drawing. My metal roof isn't going to catch fire
  12. Haugen

    Tell me about SolArk.

    My jurisdiction has not adopted NEC 2014, so no RSD required. I considered pushing the issue and having them install them, but I knew the system would be grandfathered and by the time I do anything to be required to meet the new code, the RSDs would need to be replaced anyway. There is a...
  13. Haugen

    Home made bus bar specs?

    I'm building the same 48V system with 280Ah cells. I thought I would offer a little of my insight to this thread. I don't see that anyone considered the corrosion aspect of the bus bars. Copper connected to the aluminum terminals, especially in an environment where humidity or other moisture...
  14. Haugen

    looking for a good quality bms for my large 14s system

    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...
  15. Haugen

    Sol-Ark Inverters 8 and 12K

    Very good information! Thanks for sharing your experience. I have been searching for this myself. I need to look into the Seplos BMSs. Though, 100A won't withstand the 185A charhe current from the SolArk, I suppose at 48V that's enough to absorb the hit from my A/C starting up. With the...
  16. Haugen

    New Daly "Smart" BMS w/ Communication. (80-250A)

    Proper electrical design should always leave margin between the use case and the limits of the equipment. Probably not 50%, but a 20% derating is pretty common to ensure that problems do not evolve from pushing the limits. The temperature rise needs to be taken into consideration. A lot of...
  17. Haugen

    Avoiding Galvanic Corrosion

    You're better off using a noble metal chart to identify the metals that are most compatible concerning galvanic reaction. Tge closer the metals are, the less galvanic reaction they will have when paired...
  18. Haugen

    DEYE Inverter UL Listed available in US

    Thank you for clearing up the misconceptions. Thank you to your veteran team for their service. Ooh-RAH! or Hooah! depending on which way you lean.
  19. Haugen

    Best way to compress cells in packs

    According to the latest revision of the EVE datasheet, the difference between the 30% (71.5mm) and the 100% (72.0mm) charge dimension is 0.5mm both are +/-1mm. So the change in thickness is within the margin of error. That's a little less than 0.020". I'm not going to spend too much effort...
  20. Haugen

    Avoiding Galvanic Corrosion

    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...
  21. Haugen

    Avoiding Galvanic Corrosion

    I was changing the converter in my camper to be able to install the lithium batteries. When I pulled the battery terminals off, there was a lot of corrosion. It has only been about 6 months since I installed my battery cutoff switch. I installed gold plated terminals at that time to try to...
  22. Haugen

    Heltec BMS' (up to 350A) with Active Balancing & Independent Active Balancers

    The important part is to get the right crimp tool. The automotive industry is pretty much crimp only, and I there are few places with a harsher environment. https://www.hpacademy.com/technical-articles/solder-vs-crimping/
  23. Haugen

    Heltec BMS' (up to 350A) with Active Balancing & Independent Active Balancers

    Extensive discussion about corrosion on terminals here. https://diysolarforum.com/threads/avoiding-galvanic-corrosion.10947/
  24. Haugen

    DEYE Inverter UL Listed available in US

    Working on bus bars as I have time. Got discouraged by quotes from machine shops, so I ordered bar stock and started cutting. Drilling the holes precisely without a mill has been the challenge. I want to make one hole oblong by about 0.100 to account the tolerances in the cell dimensions...
  25. Haugen

    DEYE Inverter UL Listed available in US

    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.
  26. Haugen

    DEYE Inverter UL Listed available in US

    I sprung for the EMP option, so this pic would show any enclosure differences. There is definitely more to it. Ferrites were put on every wire coming from the panels and there are more that go on the battery cables. I haven't opened up the top, so I don't know whats up there. (yet) From...
  27. Haugen

    DEYE Inverter UL Listed available in US

    I think there you are probably fairly close to the mark. There is obviously a market for an all-in-one product everywhere. SolArk may not have designed every CCA, but probably commissioned the product and sent the design to China for cheap manufacture. SolArk having the IP rights in the US is...
  28. Haugen

    New Supplier for 280Ah cells: Shenzen Basen

    Go to the beginning of this thread for a link to the Basen store on Alibaba.
  29. Haugen

    New Supplier for 280Ah cells: Shenzen Basen

    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...
  30. Haugen

    New Supplier for 280Ah cells: Shenzen Basen

    What I'm finding out is that to ship these, one needs to complete official training on shipping "dangerous goods" according to FedEx, these batteries are akin to shipping radioactive devices. 😳 I was told that the course was about $150 and would take 4 hours. After that, you have to declare the...
  31. Haugen

    Heltec BMS' (up to 350A) with Active Balancing & Independent Active Balancers

    Anyone have the PN or the series of the JST connector Heltec is using? There is a chance that I can get my hands on a crimper and make replacements
  32. Haugen

    New Supplier for 280Ah cells: Shenzen Basen

    Thanks Luthj, I am trying to ship 16 - 280Ah cells. 4 boxes of 4. (about 23kg each) There is a definite chance that this will be a repeat thing. That's why I want to get it right.
  33. Haugen

    Heltec BMS' (up to 350A) with Active Balancing & Independent Active Balancers

    I bought very similar foam at JoAnn Fabric in the craft section. Not self adhesive, but only like $1 for a letter size sheet.
  34. Haugen

    New Supplier for 280Ah cells: Shenzen Basen

    I'm not trying to get around the rules. I certainly don't want someone getting hurt if I avoided doing the right thing. These cells came all the way from China without any markings. They arrived by FedEx ground, so I want to send them ground. I'll print out the labels and apply them. What...
  35. Haugen

    New Supplier for 280Ah cells: Shenzen Basen

    Has anyone tried to ship these cells after receiving them? I'm trying to sell some spares and all of the shipping services are acting like it's plutonium. They came to me via FedEx in these boxes. Why is this so hard?
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