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  • #31
    Originally posted by Mcmullen7242 View Post
    Because Mike said they charge at higher rate and Someone sells them cheap near me. The Gel batteries I was looking at said they last over 1000 cycles with 50% discharge, is that better than flooded?
    I said AGM "CAN" be charged at high rates. Without a lot of power to charge them from, that advantage vanishes.

    Gel batteries cannot be quickly charged and in a solar situation, will not last long.

    The best bet for new users/systems, is Golf Cart batteries, 6v, 200ah are about $95, and you would need 2 for a 12V system
    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

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    • #32
      Ok thanks and how much can those batteries be discharged without it ruining life time

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      • #33
        I was thinking of doing this:
        inverter- https://www.amazon.com/novopal-Inver...a-759905213922

        charger- https://www.amazon.com/Charger-Contr...045469697&th=1

        batteries- https://offerup.co/qQLjB5E0vY

        panels (getting a really good deal on a bunch of these)-
        https://www.facebook.com/marketplace...6271243160912/

        Comment


        • #34
          A 2KW inverter can suck the batteries dry pretty quickly. Why such a large inverter ?

          The charge controller, if it works, is a simple PWM controller. Not much to go wrong in it.

          The panels are large, high voltage 34Vmp 5A panels. With a PWM controller, your batteries will see less than half the watts the panels are capable of.
          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


          • #35
            Originally posted by Mike90250 View Post
            A 2KW inverter can suck the batteries dry pretty quickly. Why such a large inverter ?

            The charge controller, if it works, is a simple PWM controller. Not much to go wrong in it.

            The panels are large, high voltage 34Vmp 5A panels. With a PWM controller, your batteries will see less than half the watts the panels are capable of.
            I was going to do 8 panels at 1360 watts. And then in a little get more. Will the inverter take 2kw or just use what i have running at the moment
            Last edited by Mcmullen7242; 07-21-2019, 09:40 PM.

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            • #36
              I think Mike is right, that controller seems too cheap to be a real MPPT controller, and the mention of the "negative MOSFET switch" is another clue that it's probably just PWM. Since PWM is just on/off switching, 5A x 8 panels is 40A, or 480W. Those panels really need an MPPT controller and/or a 24V battery to take advantage of the operating voltage. Inverters only take what they supply, plus a little more due to inefficiencies. The problem is a big inverter uses proportionally more power when idle, which can discharge a small battery quickly, and possibly pulling a dangerous amount of current from the battery with a large load or surge.

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              • #37
                Originally posted by sdold View Post
                I think Mike is right, that controller seems too cheap to be a real MPPT controller, and the mention of the "negative MOSFET switch" is another clue that it's probably just PWM. Since PWM is just on/off switching, 5A x 8 panels is 40A, or 480W. Those panels really need an MPPT controller and/or a 24V battery to take advantage of the operating voltage. Inverters only take what they supply, plus a little more due to inefficiencies. The problem is a big inverter uses proportionally more power when idle, which can discharge a small battery quickly, and possibly pulling a dangerous amount of current from the battery with a large load or surge.
                Ok thanks, but if I don
                Last edited by Mcmullen7242; 07-21-2019, 11:09 PM.

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                • #38
                  Also is this a real MPPT?

                  https://www.amazon.com/Controller-Ba...255888697&th=1

                  Comment


                  • #39
                    It's hard to tell for certain. It does seem to have the toroids and capacitors I'd expect, and the price is at about the bottom end of what you'd see for a small MPPT controller. The reviews aren't great though. By the way your previous post was cut off, try not using apostrophes. Copy it before you save it and if you see it truncated, remove the punctuation or character that caused it.

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                    • #40
                      Sorry about that but if i do not really use much energy when the suns down and I have 4 of those batteries would the inverter still drain them? Also within a month or two I will be upgrading the batteries closer to 10kw (getting rid of these and buying brand new 24v 200ah batteries) Most of my energy usage will be midday.

                      also could you post me a link to a charger that you would like so I can try to compare?
                      Last edited by Mcmullen7242; 07-22-2019, 11:17 AM.

                      Comment


                      • #41
                        They are not proud of their electrical specs, since they don't publish self-consumption or efficiency, My guess would be 50W in idle, x 10 hours = 50whr, it won't drain the battery, but it's not insignificant.
                        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


                        • #42
                          Originally posted by Mike90250 View Post
                          They are not proud of their electrical specs, since they don't publish self-consumption or efficiency, My guess would be 50W in idle, x 10 hours = 50whr, it won't drain the battery, but it's not insignificant.
                          Do you know of any efficient 1kw-1.5kw 24v pure sine wave inverters for under 350? But also can I just turn off the inverter during the night since my appliances are all propane?
                          Last edited by Mcmullen7242; 07-22-2019, 10:47 PM.

                          Comment


                          • #43
                            Efficient inverters require engineering and quality parts The Morningstar Suresine 300 is efficient and expensive. And reliable.
                            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


                            • #44
                              Originally posted by Mike90250 View Post
                              Efficient inverters require engineering and quality parts The Morningstar Suresine 300 is efficient and expensive. And reliable.
                              I'm pretty sure that is only a 300w inverter, but I'm looking into that brand thanks

                              Comment


                              • #45
                                it's a 300w inverter with a 600w surge for 10 min rating. Not quite enough to start a fridge, but it will do a lot of other work.
                                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

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