X
 
  • Time
  • Show
Clear All
new posts
  • brijhariya
    Junior Member
    • Jun 2010
    • 4

    #1

    Lower VOC in Solar panel

    Dear Team

    I have 120watt solar panel but VOC is 15.50V to 16V and VMP is coming 14.

    Would solar panel will charge my battery ??
  • Mike90250
    Moderator
    • May 2009
    • 16020

    #2
    Charging the battery would be marginal with that voltage. It would take a long time - several days.
    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
      Too low of a voltage for a 12 volt battery. At 14 volts with a blacking diode minimum would only give you 13 volts, and a 12 volt battery needs around 15 to 16 volts.
      MSEE, PE

      Comment

      • brijhariya
        Junior Member
        • Jun 2010
        • 4

        #4
        Originally posted by Sunking
        Too low of a voltage for a 12 volt battery. At 14 volts with a blacking diode minimum would only give you 13 volts, and a 12 volt battery needs around 15 to 16 volts.
        What is minimum VOC require to charge battery.. Have read minimum 14.50V is charging point of battery

        Comment

        • Mike90250
          Moderator
          • May 2009
          • 16020

          #5
          Originally posted by brijhariya
          What is minimum VOC require to charge battery.. Have read minimum 14.50V is charging point of battery
          The Voc does not really count, as there are no charging amps at that voltage, V max power should be about 18V if you have a cool area, or 19v if a hot climate.
          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

          Working...