Cruising Sailors Forum Archive

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• Full charge in November-disconnected, batteries read 12.7, 12.5.12.4 volts today.
  • Hernia operation last Monday so no batteries for awhile... but they get used at home as sump pump backup and seem okay
  • Not bad. My chart shows 12.4 as 75%
    • Here is a link for those who are interested....
      • He knows his stuff. I use his overnight test.
        • He goes into this in the books but....
          • Here is a better link...
            • You're right, he says 3 weeks without charging is a battery killer.
              • I think much like any subject...
              • You've got to take what Smead..
                • Thanks, that's valuable data for me.
                • Hey Maine Sail, what has been your experience with LiFePO4?
                  • DDW...
  • Carrying over 12.6 is unusual.
    • I noted my voltmeter may be optimistic.
      • Not certain I agree with the...
        • For lead acid, you're preaching voodoo, Bruce.
      • Mine are left aboard too
        • http://cruising.sailboatowners.com/csbb/index.cgi/md/read/id/196980/sbj/can-t-seem-to-make-my-batteries-last/
          • I see dead, sulfated lead acid ....
            • As soon as science tells me my lead acid GRP 27's will last longer if I charge them over the winter,...
              • The only reason to charge over the winter
                • My solar panels keep my batteries fully charged over the winter
                • At 10 to 15 degrees, deduct 0.026
              • I'm "lazy" like Tom
            • Bruce, I too, have an energy hog with AGM's.
            • Old Fiats and kingpins!
              • I love our little Fiat 500! way cool little car....
              • Had a 600, too. Rebuilt the motor, 43 miles to the gallon in or out of town. Small.......
              • My love affair with Fiats went bad . . .
                • Welll, so did mine. Eventually bought a Fiat 850 coupe and it died at 38k.
          • LOL! I deserved that
  • Interesting thread
    • Rolls says a battery discharged to SG 1.190, will freeze at -12F.
      • our climate last winter