Need advice on "reasonably priced" 24V inverter

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  • RenewablesRock
    Member
    • Jul 2018
    • 88

    #16
    I finally found an A/C that will run on solar. For a little over $700 for the unit and 48V charge controller than it needs to run. Plus I should be able to use 4 of my solar panels to make it operate. And then I need 600 Ah worth of batteries for it, all wired in series for 48V. They said to order four 150 Ah batteries for it.

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    • littleharbor
      Solar Fanatic
      • Jan 2016
      • 1998

      #17
      Originally posted by RenewablesRock
      I finally found an A/C that will run on solar. For a little over $700 for the unit and 48V charge controller than it needs to run. Plus I should be able to use 4 of my solar panels to make it operate. And then I need 600 Ah worth of batteries for it, all wired in series for 48V. They said to order four 150 Ah batteries for it.
      Would that be 4, 48 volt, 150 ah batteries?? no such creature. If you were to find one it would weigh 400+ lbs. If you were to use 150 ah. 12 volt batteries then you would need 16 of them to achieve a 600 ah. @ 48 volt battery.
      2.2kw Suntech mono, Classic 200, NEW Trace SW4024

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      • RenewablesRock
        Member
        • Jul 2018
        • 88

        #18
        Originally posted by littleharbor

        Would that be 4, 48 volt, 150 ah batteries?? no such creature. If you were to find one it would weigh 400+ lbs. If you were to use 150 ah. 12 volt batteries then you would need 16 of them to achieve a 600 ah. @ 48 volt battery.
        No, four 12V batteries that I wire in series to make 48 volts. That's what it requires.

        Here's the A/C unit. This price is for the hybrid that requires 220V or solar panels. The one I'm ordering is $509 and it's the off the grid version:


        Plus I have to order their 48 volt inverter for $80. Plus shipping and freight forwarding. Then I still need the batteries which I can get from the same people or there are many others on there selling 150 Ah batteries as well.

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        • ButchDeal
          Solar Fanatic
          • Apr 2014
          • 3802

          #19
          Originally posted by RenewablesRock
          I need 600 Ah worth of batteries for it, all wired in series for 48V. They said to order four 150 Ah batteries for it.
          I suspect they want you to get a 150Ah 48V battery bank not a 600Ah 48V battery bank.
          four 150Ah batteries in series makes a 150Ah 48V battery.
          OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

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          • Justin B.
            Member
            • Jun 2018
            • 48

            #20
            When in parallel voltage stays the same and current goes up. When in series voltage goes up and current stays the same...

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            • RenewablesRock
              Member
              • Jul 2018
              • 88

              #21
              The company said I need at least four 12V 150 Ah batteries wired in series. That has to keep the A/C running for nearly 5 hours. I guess I could go with 200 Ah ones. Those would be huge in my master bedroom to run the A/C.

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              • bcroe
                Solar Fanatic
                • Jan 2012
                • 5209

                #22
                Instead of batteries, how about freezing a lot of those (state change) freezer packs when the
                sun is shining? Then blow air over them after sunset. Bruce Roe

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                • RenewablesRock
                  Member
                  • Jul 2018
                  • 88

                  #23
                  Originally posted by bcroe
                  Instead of batteries, how about freezing a lot of those (state change) freezer packs when the
                  sun is shining? Then blow air over them after sunset. Bruce Roe
                  I'm sure that will work, but then you can't set it and forget it. Plus I'm sure that will add to the humidity. All I see is never ending gloom and doom all over YouTube. If one day the power grid goes down for an extended period of time, all of the people who think we are whack jobs for being interested in this solar stuff will all of a sudden be best friends with us once they realize we are the only ones in the neighborhood with power.

                  After this A/C project, I would next like to see how I can easily charge my electric car.

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                  • Matrix
                    Solar Fanatic
                    • Oct 2017
                    • 360

                    #24
                    If the grid goes down for more than a few days, it's going to Mayhem, no one is going to be your friend - not even your friends. A few weeks ago, Stores in N. Central FL had a momentary black out and shoppers went wild and started looting. It will not take much.

                    So no one will thank you for being a whack job now - and trust me, I'm right there with you for the same reasons. But, no, if you have food and power, they will come after you. So You had better be loading up on guns and ammo too and be prepared to shoot and keep shooting. A world without the grid is a world most of us would probably not want to live in. (or at least would not be prepared to live in very long)
                    285Wx9 / MNClassic 150 / CSW4024 / TrojanL16H-ACx4

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                    • SunEagle
                      Super Moderator
                      • Oct 2012
                      • 15160

                      #25
                      Originally posted by Matrix
                      If the grid goes down for more than a few days, it's going to Mayhem, no one is going to be your friend - not even your friends. A few weeks ago, Stores in N. Central FL had a momentary black out and shoppers went wild and started looting. It will not take much.

                      So no one will thank you for being a whack job now - and trust me, I'm right there with you for the same reasons. But, no, if you have food and power, they will come after you. So You had better be loading up on guns and ammo too and be prepared to shoot and keep shooting. A world without the grid is a world most of us would probably not want to live in. (or at least would not be prepared to live in very long)
                      People for some reason are very edgy and you are correct it will not take much to light the fuse on the powder keg.

                      IMO if there is an extended grid outage having solar or emergency power may "draw the pests to the light". You will need a big bug zapper to keep them away.

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                      • J.P.M.
                        Solar Fanatic
                        • Aug 2013
                        • 15015

                        #26
                        Originally posted by Matrix
                        If the grid goes down for more than a few days, it's going to Mayhem, no one is going to be your friend - not even your friends. A few weeks ago, Stores in N. Central FL had a momentary black out and shoppers went wild and started looting. It will not take much.

                        So no one will thank you for being a whack job now - and trust me, I'm right there with you for the same reasons. But, no, if you have food and power, they will come after you. So You had better be loading up on guns and ammo too and be prepared to shoot and keep shooting. A world without the grid is a world most of us would probably not want to live in. (or at least would not be prepared to live in very long)
                        How did people survive before the grid or distributed power ? Seems to me that preppers and others of that ilk are a bit shortsighted, or maybe have a different idea of necessity vs, want.

                        When I was a kid, some folks in my area, and I mean more than a few families, spent their summers in cottages around the Finger Lakes in upstate NY with no power at all, pretty much by choice and preference. They mostly had primary larger homes with utilities usually less than ~ 20 miles away, but pretty much locked them up for the summer. I remember the old folks at the time mostly decrying how soft society has become what with all these new fangled gadgets like TV, etc.

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                        • bcroe
                          Solar Fanatic
                          • Jan 2012
                          • 5209

                          #27
                          I see the days before the grid as being mostly just dedicated to staying alive. You didn't last much longer
                          after getting too sick or old to play that game. Only a few had the luxury of thinking mostly of other things.
                          The idea of hauling my own water instead of that pump, or growing my own food instead of that monster
                          tractor across the street, cutting firewood and moving it along with taking care of the horses, is scary.
                          Bruce Roe

                          Comment

                          • Mike90250
                            Moderator
                            • May 2009
                            • 16020

                            #28
                            If I needed to harvest, buck, haul, cut, split and stack 2.5 cords of wood, just myself (62) and wife (67) we might last 1 summer. Instead we were wage slaves for 35 years, saved $ and can now hire firewood cut to the right length and delivered. We still stack it though. Oil lamps and candles at night eventually soot up the house. cooking over wood, that's all behind me. When propane can't be delivered, wood stops, and seeds are not available, then I'm in deep do-do.
                            Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
                            || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
                            || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

                            solar: http://tinyurl.com/LMR-Solar
                            gen: http://tinyurl.com/LMR-Lister

                            Comment

                            • SunEagle
                              Super Moderator
                              • Oct 2012
                              • 15160

                              #29
                              Originally posted by Mike90250
                              If I needed to harvest, buck, haul, cut, split and stack 2.5 cords of wood, just myself (62) and wife (67) we might last 1 summer. Instead we were wage slaves for 35 years, saved $ and can now hire firewood cut to the right length and delivered. We still stack it though. Oil lamps and candles at night eventually soot up the house. cooking over wood, that's all behind me. When propane can't be delivered, wood stops, and seeds are not available, then I'm in deep do-do.
                              Hmmm. Deep Do-Do can be converted to barnyard gas. "blue smiley face"

                              Comment

                              • J.P.M.
                                Solar Fanatic
                                • Aug 2013
                                • 15015

                                #30
                                Originally posted by bcroe
                                I see the days before the grid as being mostly just dedicated to staying alive. You didn't last much longer
                                after getting too sick or old to play that game. Only a few had the luxury of thinking mostly of other things.
                                The idea of hauling my own water instead of that pump, or growing my own food instead of that monster
                                tractor across the street, cutting firewood and moving it along with taking care of the horses, is scary.
                                Bruce Roe
                                Yea, probably something like that. My 1st wife's uncle didn't care much for hauling H2O either. So, he sunk his own well and then built a house on top of it. Powered a pump and the rest of the house with new fangled grid power. That was in/around the late '20's/early '30's. He wound up dying in the saddle with his boots on as an M.E. with U.S. Gypsum.
                                Last edited by J.P.M.; 07-26-2018, 12:50 AM. Reason: Spelling.

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