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Thread: Dual Batteries

  1. 19th November 2010, 01:55 PM #1
    Wongdai's Avatar
    Wongdai
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    Dual Batteries

    Noob question alert!

    I can find plenty of articles in how Dual Battery setups work, but I don't know and cannot find what is the purpose of having a dual battery.

    Can someone explain?
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  2. 19th November 2010, 02:19 PM #2
    JohnF
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    stand in the pouring rain while waiting for road service due to a flat battery, and you will know one of the answers to this question.

    Some use the second battery to run a fridge, etc., as if they did this from the main battery they would probably have a flat battery when they wanted to start the car.
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  3. 19th November 2010, 02:23 PM #3
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    What John above said....

    a second battery to run fridge/lights/laptop/tv/kettle/radio etc while the cars not running, and then you still have the main one for starting and running the car.

    They both then charge while the car is running.

    hmmmmmmm

    2007/2002/2000/1994/1993/1988/1987/1985/1984/1981/1979/1973 Range Rover 1986 Wadham Stringer
    and a Nissan Cube............
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  4. 19th November 2010, 02:23 PM #4
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    Dual battery setups allow you to isolate the Starter battery and use the Auxillary (second battery) to operate camping equipment/fridges/lighting,etc. without affecting the charge in the starter battery, so even if the aux. battery goes flat you still have a full charge in your starter battery to start the vehicle with, Regards Frank.
    P.S. When I started typing this there were no other replies.
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  5. 19th November 2010, 03:06 PM #5
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    You will have to type quicker frank
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  6. 19th November 2010, 03:19 PM #6
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    Thanks all. Mystery explained.
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  7. 19th November 2010, 10:30 PM #7
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    Quote Originally Posted by THE BOOGER View Post
    You will have to type quicker frank
    Geoff, I don't think I can type faster with 2 fingers, Regards Frank.
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