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  1. coolwaterxii

    Sol-Ark with hot temp in Texas

    Nowadays in Texas where it heats up to 116 F, the Sol-Ark 15k is in the garage and temperature reaches greater than the max (140F). I called Sol-Ark and they said to partially open the garage and put a fan when it’s very hot. My questions to those who have Sol-Ark inverter and live in hot...
  2. coolwaterxii

    Repair battery terminal

    Is there a way to repair this? It snapped off.
  3. coolwaterxii

    Sol-ark + batrium canbus integration workaround until its supported

    Thanks for sharing this info. I'll try this on this coming weekend. Awesome custom battery rack setup!
  4. coolwaterxii

    Sol-Ark - Disconnect Strategy?

    Please share your experience, thanks!
  5. coolwaterxii

    Sol-Ark - Disconnect Strategy?

    How did you make Batrium communicate with Sol-Ark?
  6. coolwaterxii

    Where to buy solar panels in US (preferably Dallas, TX area)?

    I looked at Signature Solar, not bad.
  7. coolwaterxii

    Where to buy solar panels in US (preferably Dallas, TX area)?

    I'm looking for new panels. I I'm looking for new ones.
  8. coolwaterxii

    Where to buy solar panels in US (preferably Dallas, TX area)?

    Can anyone recommend a site to buy good quality and reasonable price PV panels in the US or Dallas, TX?
  9. coolwaterxii

    Solar Design Service

    Thanks!
  10. coolwaterxii

    Solar Design Service

    Do you know how much if I don't buy the kit from them?
  11. coolwaterxii

    Solar Design Service

    Is there a company that someone can recommend who can write up a Grid Tied solar design for me?
  12. coolwaterxii

    Sol-Ark - Disconnect Strategy?

    This is an interesting setup. I am in the process of building the same setup Batrium with Sol-ark and that same Shunt Trip. It will be great if you can share your experiences and how you made Batrium to Sol-Ark.
  13. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    I will do this, thanks! Question, in your experience, what IR range should I deem acceptable?
  14. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    That actually helps about SOC. Once all batteries have the same SOC, then I'll measure the IR's again. I do have the YR1035+, a lot of members do use this meter. I have to say that I have to finagle the leads a few times, and make sure I measure the same area of the battery posts for...
  15. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    I looked at the CATL 310Ah spec sheet that Deligreen gave me for this battery. The SOC are mostly at 3.29+ v. Maybe I should measure the IR after all cells are balanced?
  16. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    I am flexible in terms of the design, but for now the plan is to have two 16s4p modules. My BMS will be a Batrium BlockmonM8. I will have to know more about the capacity and what the resistance differences will have effect on the modules.
  17. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    What IR range is normal? Since there's no QR code, I looked at the battery to know more, and the only thing I can find is that at the bottom of the battery there's a marking: T2, T3, U2, D1. I don't honestly know what that means, maybe that's the version of the battery. That's pretty much...
  18. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    I received the order, but I haven't checked them. I will post my findings soon. So far it was delivered in two pallets, with minor shipping damages. None of the batteries had shipping damages. As far as grade, I honestly don't know if they are B or C. Definitely not Grade A for reasons...
  19. coolwaterxii

    Recommend me a multimeter ?

    I can't afford another Fluke meter so I end up buying uni-t ut61e. I hope that's good enough to test single-cell LiFePO batteries.
  20. coolwaterxii

    Recommend me a multimeter ?

    @NOLA_Castle , I have the Fluke 376 FC as well... I'd like to use this for measuring LiFePO battery voltages. The problem is that I can't figure out how to increase it's resolution. For example, if I measure the battery, I just get 3.2 v. I want to get it to atleast show the hundredths like...
  21. coolwaterxii

    Very new to solar but started purchasing items, not sure of the final specs of the whole system.

    Interesting, you’re the second person in this forum who has a Batrium and thinking about using Heltec because of its active balancing capabilities. If it has an off on switch, maybe the Batrium software has logic to turn on a relay to turn on the Heltec system when it thinks it needs to...
  22. coolwaterxii

    Very new to solar but started purchasing items, not sure of the final specs of the whole system.

    @kromc5, are you running the Heltec Active Balancer with Batrium's passive balancer on? I will have the same setup as you, so it will be interesting how this will work and at what voltage will the Heltec Active Balancer starts working and also at what point will it stop. And curious what...
  23. coolwaterxii

    Help with 128 batteries each one is 280ah, and want to configure for 48v system.

    I was going to buy the K9 will opt for the blackmon's too. My reasons are each mon will have temperature sensor vs 4, and it seems it has higher balancing amps.
  24. coolwaterxii

    Help with 128 batteries each one is 280ah, and want to configure for 48v system.

    @Shawn Hayes, just curious. How did you decide blackmons vs the K9's?
  25. coolwaterxii

    Help with 128 batteries each one is 280ah, and want to configure for 48v system.

    I think mine is worse, they didn't UPS/FedEx or any delivery service with tracking. April Cao from Deligreen just contact her in 2 months. Yikes...
  26. coolwaterxii

    Help with 128 batteries each one is 280ah, and want to configure for 48v system.

    So they just shipped the batteries, there's no tracking number because: "Because choose sea- truck delivery, not sea-Fedex/ups delivery, but pls do t worry" - April Cao from DeliGreen Is this normal? There will be no tracking information?
  27. coolwaterxii

    Physical layout 8P16S

    Thanks @kromc5! Originally that was the plan, then I read Orion BMS' article on avoiding multi-string config as much as possible and after I talked to Jaron @ Batrium he said I should be fine with running it as one big battery pack. Having said that, I may buy two Batrium K9's and have one as...
  28. coolwaterxii

    Physical layout 8P16S

    Hi all, I talked to Batrium about going about a battery bank a Sol-Ark inverter where it can draw 200-400A continuous, 1000A surge/peak. He strongly recommend to keep it simple and doing a 8P16S 48v @ 2480Ah capacity should be fine. The question that I now have is how to arrange the...
  29. coolwaterxii

    Battery enclosure recommendations for 32 or 48 cells

    @solardad , thanks! What did you end up using?
  30. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    @solardad, that’s great to know! The only thing that April couldn’t do for me is to match the cells. She said it’s too big of an order. Let’s hope it won’t be too big of a difference.
  31. coolwaterxii

    Battery enclosure recommendations for 32 or 48 cells

    Nice build! Good point on asking manufacturer if they allow stacking it vertically.
  32. coolwaterxii

    Battery enclosure recommendations for 32 or 48 cells

    I'm looking for a neat looking battery enclosures for 32 or 48 CATL 380Ah cells. I've seen videos from DMI INC and SolarEngineering using a Craftsman 28 Metal Tool box like below. Any other recommendations? I'm trying to put it in the garage where the wife won't complain too much. :)...
  33. coolwaterxii

    Ordering 128 batteries through Alibaba ( Deligreen) - please help

    Update on this: I was able to pay another order with CC, and then got declined again by Alibaba for the second order. Maybe because I'm new with Alibaba they are throttling the frequency of ordering large transactions. So half of my total order's through CC and half through Wire Transfer.
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