1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
    Caluwe - Passion for Fire and Water ( Pellet and Wood Hydronic and Space Heating)

Is my battey bad or is it the panel?

Post in 'The Green Room' started by muncybob, Feb 25, 2013.

  1. muncybob

    muncybob Minister of Fire

    Joined:
    Apr 8, 2008
    Messages:
    1,975
    Loc:
    Near Williamsport, PA
    I have a very small solar panel on top of my shed that did charge a battery for my shed light. I'm not sure if my battey is bad or if the panel is no longer working? How can I tell if it's the panel?

    Helpful Sponsor Ads!





  2. Jags

    Jags Moderate Moderator Staff Member

    Joined:
    Aug 2, 2006
    Messages:
    14,655
    Loc:
    Northern IL
    Do you have a test meter? Test the voltage at the battery terminals when the panel should obviously be producing (high sunlight). You should get a reading higher than 13V.
  3. begreen

    begreen Mooderator Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    46,075
    Loc:
    South Puget Sound, WA
    In addition to that test, disconnect the battery and test it for voltage. If it is below 12 volts that could be the issue, especially if the battery is at a cold outdoor temp. Also, if you can, check the fluid in the cells. If you see exposed plates, it is probably shot.
  4. seige101

    seige101 Minister of Fire

    Joined:
    Mar 25, 2008
    Messages:
    530
    Loc:
    Palmer, MA
    Perhaps the solar panel hasn't been producing enough power to charge the battery or the cold winter temps have been decreasing capacity or have frozen the battery.

    Take the battery inside, let it warm up and throw it on a charger. Then put it back outside and see if it works
  5. Circus

    Circus Member

    Joined:
    Jan 11, 2013
    Messages:
    119
    Loc:
    EC Wisconsin
    Test the battery by charging it with something else. Lead acid batteries are killed by over draining. NiCa are killed by under draining.

Share This Page