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Thread: Qucik query: jump starting from 2nd battery

  1. 22nd February 2009, 04:17 PM #1
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    Qucik query: jump starting from 2nd battery

    Hi,

    I've been away for a while and the disco 1 (300tdi) won't start.

    There is a dual battery system connected (SC 40).

    Can I try and jump off the second battery and see if it will start?

    Do i need to disconnect the second battery first before connecting jumpers?

    Thanks in advance.

    Matt
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  2. 22nd February 2009, 06:31 PM #2
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    Hi Matt, just jump start from your auxiliary battery, no need to disconnect anything.

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  3. 22nd February 2009, 06:33 PM #3
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    I agree but with the proviso that your second battery is a rated cranking battery and not a deep cycle jobbie.
    Dave

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  4. 22nd February 2009, 06:50 PM #4
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    Hi Blknight, that doesn’t really matter for a single jump start.

    Most deep cycle batteries can be use for a jump start and not be effected by one or two jump starts, just don’t do it on a regular basis.

    A few deep cycle batteries can not produce the current require for a jump start but it still won’t effect the battery by trying.

    Either way, particularly if your stranded, it won’t hurt to try.

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  5. 22nd February 2009, 06:56 PM #5
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    it can... some deep cycle batteries have a fusable link between the terminals and the plates if you try to draw to much out of or push to much into the battery it lets go.

    Admitedely I havent seen one in years but as the batteries are sight unseen due care and all that crud...

    Normally Id link in parallel and get a tow or push start if the second battery was a deep cycle.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
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  6. 22nd February 2009, 07:03 PM #6
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    True but I am assuming he has an automotive deep cycle battery and not a old RAPS battery.

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  7. 22nd February 2009, 07:53 PM #7
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    just did a search... some deep cycle batteries still have them but they are ment to be used in a fixed installation like a solar power plant that gets left unattended.

    I still dont think Id go a jump from a deep cycle battery if the main battery was dead, if it just needed a little help Id consider it.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
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  8. 22nd February 2009, 08:21 PM #8
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    Quote Originally Posted by drivesafe View Post
    Hi Matt, just jump start from your auxiliary battery, no need to disconnect anything.
    That
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  9. 22nd February 2009, 08:51 PM #9
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    Thanks guys, all sorted.

    Jumped, started and drove it for 30 mins...
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  10. 22nd February 2009, 10:02 PM #10
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    Quote Originally Posted by Blknight.aus View Post
    just did a search... some deep cycle batteries still have them but they are ment to be used in a fixed installation like a solar power plant that gets left unattended.
    That’s the only place I’ve ever come across “strange” batteries but I did have an auto elec customer of mine, many years ago, showed me one of his customers vehicles and the old guy had a glass battery as his auxiliary battery, inside the cab.

    He only used it to run a radio but it was not my idea of a safe option.

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