diy solar

diy solar

Recent content by uberpixel

  1. U

    4S 272/280ah enclosure suggestion

    Sorry - just saw this... Might be a bit too late, but you should be able to make that work. As you said, might need to shift the pattern over a bit so you don't squeeze the cells with the additional angle thickness. It will fit either way, but might just get a bit tight - and the PDF might...
  2. U

    JBD bms enclosure or mounting holes

    You could fab up a strip or angle of aluminum that allows you to bolt to the stand-off holes and create wings with larger holes to bolt to your enclosure. See my post below for how I took advantage of the stand-off holes on the JBD BMS to mount to my enclosure. Might help "spark" an idea...
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    4S 272/280ah enclosure suggestion

    Just an update on the ICECO VL45 cooler test with this battery. So far it's been running for 14 days on one charge. I have the temp set to 36F, the compressor speed on the 'MIN' setting, and the battery protection on 'LOW'. The test started with the cooler sitting in my living room at room...
  4. U

    4S 272/280ah enclosure suggestion

    Nice work. I guess it never hurts to ask! I'm definitely impressed with the case. VERY sturdy and well built. Maybe I'll reach out to them and see if they'll give me a deal on some lock cores for the latches... -uberpixel
  5. U

    4S 272/280ah enclosure suggestion

    Try this one... [link] -uberpixel
  6. U

    4S 272/280ah enclosure suggestion

    This is what I used [link] They are quite thin at only 0.02” or 0.5mm. -uberpixel
  7. U

    4S 272/280ah enclosure suggestion

    I had actually already taped an extra layer of cutting board plastic to this side of the cells as an added buffer. Just didn’t mention in my previous build notes. I appreciate that you’ve identified one of the potential failure points that I was concerned about. Confirms my thinking... -uberpixel
  8. U

    4S 272/280ah enclosure suggestion

    That’s a valid concern and something I have been thinking about. It’s hard to tell from the pictures, but there’s nothing but airspace (about 1/2”) between the actual BMS and the cells. I placed some foam between the aluminum angle “rail” and the cells to keep them from rocking into the BMS, but...
  9. U

    4S 272/280ah enclosure suggestion

    I should add, this is my first battery build. I'm open to criticism and suggestions and by no means warrant or endorse my work as correct or proven... But, hopefully somebody else finds some part of this useful. Please share your questions or build pictures if you make one! -uberpixel
  10. U

    4S 272/280ah enclosure suggestion

    Finally, I packed another row of foam around the top of the cells to keep them from rocking around - including putting some foam between the aluminum angle and the cells. I considered adding a more rigid bumper to ensure there wouldn't be any metal on metal contact, but this seems pretty secure...
  11. U

    4S 272/280ah enclosure suggestion

    One of the cool things about these cases is that they have a bunch of molded in holes for adding interior panels. I took advantage of those holes to mount the aluminum angle that holds the BMS in place. I've attached (to this post) a PDF of the 1:1 template I used to cut out the part - set...
  12. U

    4S 272/280ah enclosure suggestion

    And more... Notice how I put the vent holes inside the natural hood that's molded into the back. This should provide a good weather shield to keep any rain out of the box. I was going to drill a bigger hole and then decided that several smaller holes would keep mice out. Not sure if the holes...
  13. U

    4S 272/280ah enclosure suggestion

    And some more... I leveled the base with 3mm plywood scraps and put two layers of 2mm craft foam on the bottom covered with a thin cutting board. I used one of my favorite tools - double sided carpet tape to help keep all the foam in place. As mentioned previously, there is not a lot of...
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    4S 272/280ah enclosure suggestion

    Here's a dump of pictures - mostly self explanatory - but if you have specific questions let me know and I can explain what I did... Key suggestions - make yourself lifting straps to pull the battery out of the box - I saw that on a "Steve S" post and it's brilliant. You will be putting this...
  15. U

    4S 272/280ah enclosure suggestion

    Will do. I’ll try and post the rest of the pictures later tonight. I ended up using a 1.25x1.25x.065 aluminum angle to mount the BMS. May be over-engineered a tad, but why engineer it any other way? Seems to be working well so far and doubles as an extra heat sink. I’ll post pictures and a...
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