Announcement

Collapse
No announcement yet.

Battery Health?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Battery Health?

    So what is a good no-load battery voltage for a typical lead/acid GS battery? Mine is putting out about 12.5 volts with a fresh charge (not surface charge) and when turning on the ignition key (head lamp on, etc) the voltage drops to about 11.8 volts. Tested the battery using one of those low tech float ball battery testers and it says the battery is fine but I'm not so sure.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    #2
    sound like its in a normal range seeing that the headlight and all is now energised. What does it drop to while you crank it?
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

    Comment


      #3
      Sounds a little low when the key is on, but not that bad.

      As Chuck asked, what's the voltage while cranking? You don't want it dropping lower than 10.

      .
      sigpic
      mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
      hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
      #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
      #2 son: 1980 GS1000G
      Family Portrait
      Siblings and Spouses
      Mom's first ride
      Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
      (Click on my username in the upper-left corner for e-mail info.)

      Comment


        #4
        Sounds low if right off the charger

        Would not pass the Quick_Test
        Last edited by posplayr; 01-26-2011, 12:58 PM.

        Comment


          #5
          Originally posted by Nessism View Post
          So what is a good no-load battery voltage for a typical lead/acid GS battery? Mine is putting out about 12.5 volts with a fresh charge (not surface charge) and when turning on the ignition key (head lamp on, etc) the voltage drops to about 11.8 volts. Tested the battery using one of those low tech float ball battery testers and it says the battery is fine but I'm not so sure.
          Sounds like my dying battery! off charger maybe 12.5 in ten minutes-too low- and drops to below 12 with ignition on,even with headlight off. Time for AGM battery.
          1981 gs650L

          "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

          Comment


            #6
            Originally posted by tom203 View Post
            Sounds like my dying battery! off charger maybe 12.5 in ten minutes-too low- and drops to below 12 with ignition on,even with headlight off. Time for AGM battery.
            Yea, I ordered one from motobatt. Supposed to have good reviews and $65 shipped.
            Ed

            To measure is to know.

            Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

            Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

            Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

            KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

            Comment


              #7
              Where'd you order from? Direct from Motobatt?
              1983 GS 1100 Guided Laser
              1983 GS 1100 G
              2000 Suzuki Intruder 1500, "Piggy Sue"
              2000 GSF 1200 Bandit (totaled in deer strike)
              1986 Suzuki Cavalcade GV 1400 LX (SOLD)

              I find working on my motorcycle mildly therapeutic when I'm not cursing.

              Comment


                #8
                Originally posted by 1948man View Post
                Where'd you order from? Direct from Motobatt?
                Got it from an ebay seller. They have more of the same model... http://cgi.ebay.com/ebaymotors/ws/eB...=STRK:MEWAX:IT
                Ed

                To measure is to know.

                Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                Comment


                  #9
                  I've had good results with the Scorpion batteries from Battery Stuff. About $60 shipped.

                  Ed - Can I have your old one to power my 12v impact driver in the garage? (The old one I have their struggles to hold 12v on a fresh charge so yours would be an upgrade!)

                  Dan
                  1980 GS1000G - Sold
                  1978 GS1000E - Finished!
                  1980 GS550E - Fixed & given to a friend
                  1983 GS750ES Special - Sold
                  2009 KLR 650 - Sold - gone to TX!
                  1982 GS1100G - Rebuilt and finished. - Sold
                  2009 TE610 - Dual Sporting around dreaming of Dakar.....

                  www.parasiticsanalytics.com

                  TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

                  Comment


                    #10
                    Thanks for the link.
                    1983 GS 1100 Guided Laser
                    1983 GS 1100 G
                    2000 Suzuki Intruder 1500, "Piggy Sue"
                    2000 GSF 1200 Bandit (totaled in deer strike)
                    1986 Suzuki Cavalcade GV 1400 LX (SOLD)

                    I find working on my motorcycle mildly therapeutic when I'm not cursing.

                    Comment

                    Working...
                    X