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  1. #11
    Gold Member
    Join Date
    May 2013
    Posts
    424
    Location
    Casco, Mi
    Tractor
    John Deere 325 Garden Tractor & LS R3039H

    Default Re: Battery Disconnects

    Quote Originally Posted by crowbar032 View Post
    I'm not convinced that a parasitic draw exists. The batteries were over 10 years old, the machine is very rarely used, and I didn't have a tender on them. Back in the summer I was able to jump it off, but I knew I had a weak battery. I think running it with 1 weak and 1 good battery, killed the weak one and cooked the good one. I was just going to add one more level piece of mind.
    It's easy to determine if a parasitic load exists. Disconnect the negative lead at the battery, connect a voltmeter in series. If any voltage is indicated, you have a parasitic load.

  2. #12
    Elite Member
    Join Date
    Dec 2003
    Posts
    2,744
    Location
    Middle TN
    Tractor
    Kubota L4330HST

    Default Re: Battery Disconnects

    The Anderson SB series are the gold standard for battery disconnects. They are what's usually used on golf carts. Looks like they are only available up to 450 amps, but I bet they'd withstand all but severe extended cranking.

    Anderson SB 35 Connector, SB35 connector, Anderson Power Products

  3. #13
    Veteran Member repowell's Avatar
    Join Date
    Jan 2011
    Posts
    1,297
    Location
    East Texas
    Tractor
    NH Boomer 8N, NH TC40DA

    Default Re: Battery Disconnects

    A 1000-1100 amp rated disconnect would be very pricey and not needed. CCA is a rating used in the battery industry to define a battery's ability to start an engine in cold temperatures. The rating refers to the number of amps a 12-volt battery can deliver at 0įF for 30 seconds while maintaining a voltage of at least 7.2 volts. It is not how much is delivered at any single moment.

    Here is what we used on fire trucks. We normally used 2 large six volt batteries on each side wired to give twelve volts on each side. We had 250 amp alternators so it had a pretty large continuous load through it.

    M-75 Series - Battery Disconnect Switches from Switches - Littelfuse
    Randy

    NH Boomer 8N, 6' Bush Hog Squealer Rotary Cutter
    NH TC40DA, 16LA FEL, Red Master II Harrow
    Land Pride 6' Tiller, 7' Landscape Rake
    2017 GMC 2500HD 4X4 6.6 Duramax, Allison
    2008 GMC 2500HD 4X4 6.6 Duramax, Allison
    Big Tex 12GP 20' GN trailer, 50LA 14' bumper pull
    Kawasaki Mule 4010 Trans4X4, Kubota ZD1211 60"

  4. #14
    Veteran Member countrybumpkin's Avatar
    Join Date
    Jun 2005
    Posts
    2,441
    Location
    Southeast Missouri
    Tractor
    Kubota L3410; Kioti NX5510C

    Default Re: Battery Disconnects

    One like this would be plenty for a tractor, we have these on just about every truck we have and never any issues with them. Easy to mount and donít take up a bunch of room.

    M-284 Series - Battery Disconnect Switches from Switches - LittelfuseBattery Disconnects-img_0111-jpg
    If your going to be a Bear, Be a Grizzly!

  5. #15
    Silver Member
    Join Date
    Nov 2004
    Posts
    222
    Location
    southern New England
    Tractor
    Kubota L5460HSTC; Volvo ECR88 excavator; Dresser TD9H dozer; Bandit RM990 chipper

    Default Re: Battery Disconnects

    Try searching marine battery disconnect or marine battery switch. Some places are West Marine, Overtons, Perko, Defender. Boats typically disconnect the starting batteries when not in use so you don't get stranded. A 1000 amp switch will not be common though. Jim

  6. #16
    Silver Member showcattle's Avatar
    Join Date
    Jul 2003
    Posts
    186
    Location
    Eastern Ohio
    Tractor
    2008 NH T2210, 1988 Ford 3910

    Default Re: Battery Disconnects

    2008 NH T2210
    1988 Ford 3910
    1980 Ford 1100 (retired)
    2003 NH TC21 (traded for 2210)
    2005 Dodge QC 2500 4X4 CTD
    6 cows
    1 donkey
    2 dogs
    2 kids
    1 wife

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