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Charging 24V battery with 12V charger

by , Posted to on 05/22/2012 12:35 PM | "Quote" | "Quick Reply" |

Joined: 01/07/2002
Location: ND
I have a new trolling 24V Min Kota with 2 interstate batteries hooked in series.  I was wondering if I can use my 12V battery charger to charge the whole system at once or if I am going to have unhook the batteries from each other to charge them.
Re: Charging 24V battery with 12V charger
by on 05/22/2012 12:40 PM | Reply #1 | "Quote" | "Quick Reply" |

Joined: 07/12/2003
Location: ND
Just a guess but you should be able to charge two batties at one time??
Re: Charging 24V battery with 12V charger
by on 05/22/2012 12:43 PM | Reply #2 | "Quote" | "Quick Reply" |

Joined: 07/12/2003
Location: ND
I have six batteries in a series and my36v charger is not working how would I charge up these batteries??
Re: Charging 24V battery with 12V charger
by on 05/22/2012 12:51 PM | Reply #3 | "Quote" | "Quick Reply" |

Joined: 02/18/2004
Location: ND
murdock1978 Said:
I have six batteries in a series and my36v charger is not working how would I charge up these batteries??
In your boat? must be a huge compartment.

You might need to run 2, 3 bank chargers.


LINDY FISHING





Re: Charging 24V battery with 12V charger
by on 05/22/2012 12:58 PM | Reply #4 | "Quote" | "Quick Reply" |

Joined: 07/12/2003
Location: ND
AMF Harley Davidson,anybody have a36v golf cart charger for one??Have already called Garys in Stanley,he had one but I was to late!!
Re: Charging 24V battery with 12V charger
by on 05/22/2012 1:02 PM | Reply #5 | "Quote" | "Quick Reply" |

Joined: 12/01/2008
Location: ND
Mad Dog Said:
I have a new trolling 24V Min Kota with 2 interstate batteries hooked in series.  I was wondering if I can use my 12V battery charger to charge the whole system at once or if I am going to have unhook the batteries from each other to charge them.
Just get a 2 bank on-board charger.  Get her hooked up and all you have to do is plug her in at the end of the day.  They are slick.

"Diligence is the mother of good luck."

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All by:  Benjamin Franklin

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Author: John Gierach

Re: Charging 24V battery with 12V charger
by on 05/22/2012 1:05 PM | Reply #6 | "Quote" | "Quick Reply" |

Joined: 12/16/2001
Location: ND
You don't have to unhook them, but you'll have to manually hook them up individually and charge them one at a time.    Be sure to hook up the polarity of each battery properly when you change them one at a time.  Its easy to get mixed up bacause your two 12 volt batteries are hooked in series, so ignore the color of the cables and ONLY look at the polarity marks by the battery. posts themselves.
Sooner or later you'll get tired of doing this and invest in a 2 or 3 bank charger so you can plug it in and forget about any hassles with it.
Re: Charging 24V battery with 12V charger
by on 05/22/2012 2:13 PM | Reply #7 | "Quote" | "Quick Reply" |

Joined: 05/04/2007
Location: ND
bobkat Said:
You don't have to unhook them, but you'll have to manually hook them up individually and charge them one at a time.    Be sure to hook up the polarity of each battery properly when you change them one at a time.  Its easy to get mixed up bacause your two 12 volt batteries are hooked in series, so ignore the color of the cables and ONLY look at the polarity marks by the battery. posts themselves.
Sooner or later you'll get tired of doing this and invest in a 2 or 3 bank charger so you can plug it in and forget about any hassles with it.
Yep - as Bobkat says one at a time, paying attention only to each batteries terminals.

Charging both together depends on whether your system makes 24V by making the two 12V series into 24V "at the plug" or at the batteries (in that case you should see a big fat jumper from the + of one battery connected to the negative of the other, and only two wires, a positive and negative, going to the trolling motor)

older 12/24 boats (like mine which was wired in 2004) often fed the two 12V batteries' wires individually up to the plug, then the plug had a jumper that combined the two-12s into a 24. So there were 4 wires running to the trolling motor plug.

Bobkat's right, you'll get tired of the manual approach.



YETI. Wildly Stronger, Keeps Ice Longer
Re: Charging 24V battery with 12V charger
by on 05/22/2012 5:36 PM | Reply #8 | "Quote" | "Quick Reply" |

Joined: 02/28/2007
Location: ND
you can buy cheap 24v chargers at napa for $85.  Then hook them up red connector on the positive of the one battery and the black connector on the negative of the other battery.  This will charge them at the same time. 
Re: Charging 24V battery with 12V charger
by on 05/22/2012 6:24 PM | Reply #9 | "Quote" | "Quick Reply" |

Joined: 11/28/2008
Location: SD
murdock1978 Said:
I have six batteries in a series and my36v charger is not working how would I charge up these batteries??

six batteries in series would be 72 volts.
Re: Charging 24V battery with 12V charger
by on 05/22/2012 8:24 PM | Reply #10 | "Quote" | "Quick Reply" |

Joined: 07/08/2005
Location: ND
I think he has six 6volt batteries in series = 36volts
jlh321 Said:
murdock1978 Said:
I have six batteries in a series and my36v charger is not working how would I charge up these batteries??

six batteries in series would be 72 volts.



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Posted On: 05/22/2012 12:35 PM
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Tags: 24v, 12v, charger, battery, charging, charge, batteries, min, kota, interstate
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