orangezero Posted November 8, 2021 Share Posted November 8, 2021 Hello, Brand new here, just purchased a 24v/4000kw powerjack 2021 version (11.1v board). They put 8000kw on it, but my reading indicates I can probably get 2-3kws continuous. It is definitely more barebones than what others have pictured, but I knew that going in. No LCD. First off, thank you for providing this forum for discussion and knowledge sharing. I'm planning an off-grid solar solution using as much DC as possible and using my inverter as little as possible. Right now, it is probably better to describe it as a "grid adjacent" as I'm planning to basically build an all-in-one that I can move around as needed. It may power a detached garage with no current power, but I'd like to be able to put it in a van and drive away. It will be an aluminum extrusion box covered with panels housing the inverter, 5.2kw batteries, battery management, solar chargers and usb plugs, AC plugs, etc. Right now I have ten 250w solar panels, feeding into an Electrodacus DMPPT450 + SBMS120. I'm only using the SBMS120 right now. (my initial impression is wildly positive) It was pretty cool the first time (yesterday) my powerjack was powering my lights, a space heater, a small toaster oven, my fridge, and charging some laptops and phones all at once. I am almost completely ignorant of oscilloscopes, other than a few youtube videos. My first question may be a how-to on where to place my probes to watch the sine wave coming out without killing myself or my electronics. I have the case off now (yes, know the risks, DANGER). Some plans I had for simplification/improvements include: 1. maybe remove an LED if present and appropriate 2. maybe put one more loop in one of the wires 3. remove the back panel where 24V battery screw terminals are, and short wires to those posts internally. Attach 2/0 cable directly from my battery to the heatsinks where the positive and negative were connected. This would save space and weight and reduce extraneous connections. I would basically not have the back plate on at all. It would still all be encased in the aluminum extrusion and side panels. 4. learn what needs to be cooled. I think the transformer benefits from constant cooling. I'd also assume the heatsinks areas... 5. learn how close I can safely house my batteries and electronics to the transformer and other inverter electronics. Is it mostly a heat issue, or are there electromagnetic issues I don't understand... May leave it at that for now. Thanks again. Quote Link to comment Share on other sites More sharing options...
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