Long term battery charging

Discussion in 'Motorbike Technical Discussion' started by Frink, Jan 3, 2004.

  1. Frink

    Frink Guest

    I've got my bike socked away for the winter with the battery out and in my
    I've hooked up a 1amp 12v charger on a timer for 15 to 20 min a day.
    Would this be too much or too little charge or just enough?
    Should I just give it a longer charge once a month or so?
    Frink, Jan 3, 2004
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  2. Frink

    bowman Guest

    Works for me. Now all I have to do is dig the bikes out and get the
    batteries in the house. Wasn't supposed to snow this much this soon, sigh.
    bowman, Jan 3, 2004
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  3. Frink

    Mark Olson Guest

    As long as you don't boil it dry, go ahead. I think 1/2 hour every
    two weeks would be plenty, though. And believe it or not, the nice
    cold garage is a better place for that battery. As long as your
    battery is kept charged, it won't freeze, and the rate of self-discharge
    is lower at lower temperatures.
    Mark Olson, Jan 3, 2004
  4. Frink

    Don Fearn Guest

    There isn't really the need to take the battery out; it'll be quite
    happy in the cold as long as 1) its water level is correct and 2) it's
    kept fully charged all the time.
    Likely about right. In the past I've plugged my 1-amp charger into the
    garage-door opener light so it gave the battery connected to it a few
    minutes of charge each morning and each afternoon; those batteries
    seemed to last (I got *13* years out of the battery in my K75 --
    unheard of before or since).
    No reason you should need to.

    Probably the best thing you can do for your battery, though, is buy it
    a Battery Tender. It will keep your battery fully charged without
    overcharging . . . .


    Pooder Pre-aPproved this Post . . . .
    Don Fearn, Jan 3, 2004
  5. Frink

    Les Guest

    The battery will also tend to discharge slower, due to the cold temps. The
    cold slows down the chemical reaction...

    Les, Jan 3, 2004
  6. Frink

    PLC_Guy Guest

    Generally, you can charge batteries for a long time at 1/10 their
    rated discharge amp hours without damage. Harbor freight tools sells
    floating chargers for $8 (I bought 4), leave my batteries in the bikes
    in the shed all winter (-20f periodically) and my batteries last much
    longer than they did before the "float" chargers. best $32 I ever
    PLC_Guy, Jan 4, 2004
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