Low AC voltage effect on battery charging?

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  • SunSeeker1
    Junior Member
    • May 2018
    • 24

    Low AC voltage effect on battery charging?

    Sometimes I have to charge my gel battery (not agm) with the generator, but the voltage coming is 200v (fluctuates between 190 and 210) instead of a steady 230v.

    My question is, will this have any negative effects on the battery? Will it be able to become fully charged? Will the charging take longer?.
  • Mike90250
    Moderator
    • May 2009
    • 16020

    #2
    Lower line voltage usually results in slower charging, and depending on the line voltage, and quality of the charger, you may not have enough voltage to completely charge.
    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

    • Sunking
      Solar Fanatic
      • Feb 2010
      • 23301

      #3
      No effect if the charger is Switch Mode and will work from 90 to 300 volts. What changes is as the voltage goes lower, current must go higher to the charger to maintain constant power output.

      Question is what kind of charger do you have? Look at the charger name plate and look for Input Voltage Requirement will answer your question.
      MSEE, PE

      Comment

      • SunSeeker1
        Junior Member
        • May 2018
        • 24

        #4
        Originally posted by Sunking
        No effect if the charger is Switch Mode and will work from 90 to 300 volts. What changes is as the voltage goes lower, current must go higher to the charger to maintain constant power output.

        Question is what kind of charger do you have? Look at the charger name plate and look for Input Voltage Requirement will answer your question.
        Charger says input is 220v +/- 15%. In calculation that means it could go as low as 187 so I should be fine.

        Question is, what if the voltage took a dip and went to 185. What would happen then?

        Comment

        • Mike90250
          Moderator
          • May 2009
          • 16020

          #5
          Originally posted by SunSeeker1
          Charger says input is 220v +/- 15%. In calculation that means it could go as low as 187 so I should be fine.

          Question is, what if the voltage took a dip and went to 185. What would happen then?
          Who knows. It's going to be luck, no effect, shut down, slow down, or oscillate ?

          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

          • Paul Land
            Solar Fanatic
            • Nov 2018
            • 213

            #6
            Originally posted by SunSeeker1

            Charger says input is 220v +/- 15%. In calculation that means it could go as low as 187 so I should be fine.

            Question is, what if the voltage took a dip and went to 185. What would happen then?
            Add Capacitor on output to control oscillation

            Comment

            • Sunking
              Solar Fanatic
              • Feb 2010
              • 23301

              #7
              Originally posted by Paul Land
              Add Capacitor on output to control oscillation
              What a waste of Internet bandwidth. A capacitor wil have absolutely no effect whatsoever. Quit giving horrible advice and quit pretending you know what you are talking about. .

              MSEE, PE

              Comment

              • Mike90250
                Moderator
                • May 2009
                • 16020

                #8
                Originally posted by Paul Land
                Add Capacitor on output to control oscillation
                WTF are you talking about.? How about a new years vacation.

                You can't just blurt out some random nonsense, what if someone went to radio shack and got a 10 uf cap for their supply and wired it up wrong, or got the wrong voltage, or fried their power supply or their fingers.

                Best case, they wire it up somewhere (does it go on the generator regulator, generator output, or charger output ? ) and it doesn't work because you've given no idea of the size & location of the cap.

                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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