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deep cycle marine battery? will it work

Discussion in 'The Garage' started by the excuse, May 16, 2004.

  1. the excuse

    the excuse 1/2 ton status

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    can i use a deep cycle marine battery in my blazer? i donnt really understand how the deep cycle batries work. right now somethimes when i have my brights on and i try to roll up the windows there is a major shortage on battery juce. everything starts dimming and brightens as the alternator turns over. i have to shut off the lights in order to put the windows up. the alternator seems new too, its much shinier thatn the rest of the engine bay.
     
  2. unclematty

    unclematty 1/2 ton status

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    deep cycle means that it can be drawn upon heavily without causing permanant damage , it can be discharged many times without damage. A heay duty alternator should be used in conjunction with a deep cycle. as to your problem I would say check out the output of the alternator , maybe a smaller diameter pulley on it, or turn the engine idle up slightly, or maybe your window regulators are drawing too much amperage, check the alternator first. hope that helps /forums/images/graemlins/waytogo.gif /forums/images/graemlins/hack.gif /forums/images/graemlins/weld.gif /forums/images/graemlins/grind.gif
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Deep cycle batteries are not made for engine starting.

    I wouldn't run one as a primary battery.
     
  4. Pookster

    Pookster 1/2 ton status

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    Its not that its not recommended. There's no problem with doing it. Its just that the deep cycles cant discharge enough out that is needed during starting- to properly size the same CCA's out of a deep cycle as a standard car batt, you would need almost a 75% increase in battery size. Hence, it dont fit in most engine bays. /forums/images/graemlins/smile.gif
     

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