12, 24 or 48 volt

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  • thastinger
    Solar Fanatic
    • Oct 2012
    • 804

    #16
    Originally posted by Prickley
    Thanks guys, 48v it is then, i used the 8 batteries as an example as that is what i am able to afford at this stage, i allready spent about R20000(ZA currency) on what i have and that doesnt include an inverter, a decent sinewave inverter will cost me about another R25000
    That only about 1750USD spent so far, you've got about another 231,787.738293 to go for the system you want.
    1150W, Midnite Classic 200, Cotek PSW, 8 T-605s

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    • Prickley
      Junior Member
      • Feb 2015
      • 6

      #17
      Originally posted by thastinger
      That only about 1750USD spent so far, you've got about another 231,787.738293 to go for the system you want.
      Yeah bearing in mind that i probably work just as hard for R1 as you work for $1

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      • Living Large
        Solar Fanatic
        • Nov 2014
        • 910

        #18
        Originally posted by Prickley
        Yeah bearing in mind that i probably work just as hard for R1 as you work for $1
        I am not sure how the relative worth of money or labor is from one country to another plays into this, but a 20kWh per day system is going to be expensive wherever you are. I was looking at 7kWh a day, and around $30,000 to $35,000 US. I'd hate to think about how much a 20kWh a day system would cost.

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        • SunEagle
          Super Moderator
          • Oct 2012
          • 15161

          #19
          Originally posted by Living Large
          I am not sure how the relative worth of money or labor is from one country to another plays into this, but a 20kWh per day system is going to be expensive wherever you are. I was looking at 7kWh a day, and around $30,000 to $35,000 US. I'd hate to think about how much a 20kWh a day system would cost.
          Somehow paulcheung was able to do it for $25,000 and he lives in Jamaica.

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          • Living Large
            Solar Fanatic
            • Nov 2014
            • 910

            #20
            Originally posted by SunEagle
            Somehow paulcheung was able to do it for $25,000 and he lives in Jamaica.
            My main point was I didn't see the relevance of the comparison of the amount of labor in R1 and $1. I fully admit the cost for all 20 kWh systems won't be equal. I was looking at LFP and what I have been told is more inverter/charger than I need for my 7 kWh a day system. Heck, we just had someone banned who might claim to be able to put together a 12V based 20 kWh system for $15,000.

            Comment

            • SunEagle
              Super Moderator
              • Oct 2012
              • 15161

              #21
              Originally posted by Living Large
              My main point was I didn't see the relevance of the comparison of the amount of labor in R1 and $1. I fully admit the cost for all 20 kWh systems won't be equal. I was looking at LFP and what I have been told is more inverter/charger than I need for my 7 kWh a day system. Heck, we just had someone banned who might claim to be able to put together a 12V based 20 kWh system for $15,000.
              Maybe he was trying to show a comparison to the amount of R1 he earns in a year to the amount of $1 someone in the US earns with respect to the cost of living.

              Anyway you are correct the cost of a system is mainly comprised of the hardware and battery chemistry used. An LFP system will definitely cost more than FLA but maybe someday be a better choice for solar energy storage.

              Although I do not remember who got banned, anyone claiming to have a high kWh output system using 12v batteries that costs very little might be considered a spammer.

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              • thastinger
                Solar Fanatic
                • Oct 2012
                • 804

                #22
                Originally posted by Prickley
                Yeah bearing in mind that i probably work just as hard for R1 as you work for $1
                Better get another job then or donate some plasma, you have a long way to go to save up 235K R. What is your plan to replace the battery bank 5 years from now?
                1150W, Midnite Classic 200, Cotek PSW, 8 T-605s

                Comment

                • charleswschmidtke
                  Junior Member
                  • Feb 2015
                  • 3

                  #23
                  Im glad you asked the question I have been wondering the same thing my self I can see that 48v is the way to go. the thing that I wonder is why such a brisk response to a novice question?

                  Comment

                  • Living Large
                    Solar Fanatic
                    • Nov 2014
                    • 910

                    #24
                    Originally posted by SunEagle

                    Although I do not remember who got banned, anyone claiming to have a high kWh output system using 12v batteries that costs very little might be considered a spammer.
                    This is a reference to the person who advocated running what he described as "cheapo Chinese" 12V 3 or 5 kW inverter, and criticized the rationale that was given that 48V was warranted. The system was not as large as this one. I am not sure he was suspended for being a spammer, but possibly obtuse and obnoxious.

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                    • russ
                      Solar Fanatic
                      • Jul 2009
                      • 10360

                      #25
                      Originally posted by Living Large
                      obtuse and obnoxious.
                      ..............................
                      [SIGPIC][/SIGPIC]

                      Comment

                      • SunEagle
                        Super Moderator
                        • Oct 2012
                        • 15161

                        #26
                        Originally posted by Living Large
                        ... but possibly obtuse and obnoxious.
                        Now I remember. It was due to both of those reasons you mentioned.

                        Comment

                        • Prickley
                          Junior Member
                          • Feb 2015
                          • 6

                          #27
                          Originally posted by thastinger
                          Better get another job then or donate some plasma, you have a long way to go to save up 235K R. What is your plan to replace the battery bank 5 years from now?
                          Unfortuneatly jobs are few and far between, especially if you dont fall in the class "preffered" for employment as set by government, i will try to squeeze as much as possible life out of the batteries, this brand is known to last about 8 years, but i will be preparing to replace them in about 5 years
                          Originally posted by charleswschmidtke
                          Im glad you asked the question I have been wondering the same thing my self I can see that 48v is the way to go. the thing that I wonder is why such a brisk response to a novice question?
                          My thoughts exactly

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