diy solar

diy solar

Recent content by snoobler

  1. snoobler

    Later folks

    One day and one year. Time to move on. Take care, Steve
  2. snoobler

    Need help growatt & Bluetti 200p

    Most (if not all) of the Growatt series do not have typical AC charging modes when in SOL or SBU modes. Their AC chargers do not use the Absorption and float values. The AC chargers come at a set low voltage and then turn off immediately after attaining the set high voltage. See settings 12 &...
  3. snoobler

    Need help growatt & Bluetti 200p

    3.4A @ 120V = 408W It probably uses less than that, but it's good to be conservative. Given the 6 hour run time of the Bluetti, this isn't too far off the mark. The Growatt will burn another 50W. 458W/0.85 = 539W (account for inverter inefficiency) 24hr * 539W = 12,936Wh - daily energy...
  4. snoobler

    Bluetti AC200P vs BattleBorn/modular

    With 4 strings, you should technically have a fuse or breaker on each string equal to the "Max fuse" rating on the panel sticker (probably 10A). Easiest would be to use a MC4 fuse in each string. Assuming 3S4P, that's going to be about 24A. You want a 1.25X safety factor, so 1.25 * 24A = 30A...
  5. snoobler

    Bluetti AC200P vs BattleBorn/modular

    The 50 and 45 numbers are the charge current, so the 100/50 has greater charging capability of a 24V battery than the 150/45, BUT the 150/45 can charge 48V and host a notably larger array if you want to over-panel it. Given that you've pretty much maxed out your roof space, I'd stick with the...
  6. snoobler

    40' shipping container solar system to store my classic car and motorcycles in Las Vegas

    Not sure what you mean by facing East/West. My door opens to the west. Since we're North of 23.5° Latitude, sun will shine on the south face, and it will get hot as crap. It's not just about the solar heating, it's about the horrific insulating properties of the steel walls. An A/C unit can't...
  7. snoobler

    Bluetti AC200P vs BattleBorn/modular

    Yes, one MPPT SCC. 1200/24 = 50A. Will recommends several here: https://www.mobile-solarpower.com/solar-charge-controllers.html I only recommend Victron, but that's because I'm a snob. :) A Victron 100/50 would work nicely, but you would need to go 3S4P since 88V is a little too close to 100V.
  8. snoobler

    Bluetti AC200P vs BattleBorn/modular

    3 groups of 4 panels wired in series, then those 3 groups are put in parallel with each other, so your Vmp is 4X one panel, and your Imp is 3X one panel.
  9. snoobler

    Bluetti AC200P vs BattleBorn/modular

    I just realized you already posted a picture of the roof layout... derp. I only see 10, but I think you can get them on there. Your protrusions aren't too bad, and shouldn't impact your output for the majority of the day. 4S3P would work as well.
  10. snoobler

    Bluetti AC200P vs BattleBorn/modular

    Bluetti would have the same issues. Their charge controllers are fairly limited. It's about roof protrusions. If your roof protrusions will shade your panels, you need to plan for it. With 24V, you'll need 2S for sure - 3S will probably perform a little better, so 3S4P is likely a good...
  11. snoobler

    Lots of small packs with individual BMS's working together

    Welcome to the forum. Unfortunately 4S Li-ion of 3.7V nominal cells is not horribly useful for 12V. They can operate from 12-16.8V, and many inverters won't tolerate voltages over 15-16V, so much capacity is lost. The seller wants to sell you cells. Sounds like a lot of complexity and work...
  12. snoobler

    40' shipping container solar system to store my classic car and motorcycles in Las Vegas

    Welcome to the forum. First, you need to insulate the container. No way around that. I have a 40' container @ 6700 ft here in the AZ high dessert, and the wall on the sun-facing side routinely exceeds 140°F. If you insulate with something around R9+, you should be able to get by with a 1 ton...
  13. snoobler

    Mixing batteries?

    Welcome to the forum. Your solar panels determine how much you can use daily. Your battery determines how long you can run without charging. If you want to run on just battery without any solar charging for two weeks, you need 7 of those batteries (7 * 2 days = 14 days). If you want to run...
  14. snoobler

    Will, your current video "Quick Morning Rant: Chinese VS American Solar Products"

    You literally quoted him in the post above: "I said you won't find hard working competent fat people. You can call it a label... some of us call it reality." Don't mistake it for defensiveness. I simply wanted to provide a different perspective to this "reality" and provide hope for my fellow...
  15. snoobler

    Grid Tied Si-6048 and 2 new LiFePO4 Relion RB48v300 in parallel to replace 8 Fullriver DC400-6 in series?

    Welcome to the forum. There's fundamentally no difference between a "dumb" AGM battery that can't communicate with an inverter and a LFP battery that can't talk to the inverter either. The only way they communicate is via their voltage. 16 cell LFP (RB48v300) and 48V AGM have almost perfectly...
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