Draining Battery

Discussion in '2005 - 2012 (S-197) Mustang' started by yescablazer, Apr 14, 2009.

  1. yescablazer New Member

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    Does anyone have the problem of a draining battery on a 2005+ GT? I'm on my 3rd battery and something keeps leeching the charge. Any advice?
  2. NastyStang113 New Member

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    Shaker 500 or 1000?
  3. Art161 Member

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    Have you checked the parasitic draw?
  4. yescablazer New Member

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    battery drainage

    It's a shaker 500, I don't know how to check the parasitic draw. What do I need to find that out? Do I need to take it somewhere or is there a tool I could find somewhere? Thanks for the help guys!
  5. NastyStang113 New Member

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    It's probably the Shaker. How long is it taking for it to make the battery dead? Are you driving the car every day? What are you replacing it with?
  6. yescablazer New Member

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    before it took about 3-4 days, but now it's a little over a day. I put in a Kragen battery, the battery size is not too easy to find around here. Have the shaker's been known to do that?
  7. yescablazer New Member

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    I'd also like to not drive the car too much to keep the mileage and road wear down and keep my '93 GT as my daily driver
  8. NastyStang113 New Member

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    So how long are we talking between drives? It sounds like you might need to just put a battery tender on the car ...
  9. yescablazer New Member

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    not too long, 2 weekends ago i left Friday night and got back Monday night and the battery was toast, then this last weekend i garaged it Sat. night, didn't use it Sunday, battery was toast Monday morning. What's a battery tender?
  10. Art161 Member

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    Parasitic draw is the current that the computers draw when the car has been shut off for at least 40 minutes. It is typically 20-30 milliamperes, but up to 50 ma is considered okay. It is somewhat of an involved process if you are not familiar with how to do it. My dealer did it for me at no cost.

    You should shut the Shaker system off by using the on-off switch on the radio and not rely on opening the door to shut it off. Sometimes the subwoofers keep drawing current if you don't use the on-off switch.

    A battery tender is a device that you plug into 110 volts AC and hook up to the battery. It keeps a charged battery from discharging. It is not designed to jump start a car or to charge a discharged battery. It should have circuitry in it so that it does not overcharge the battery.
  11. yescablazer New Member

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    thanks, i'll give that a try and see how it pans out. i appreciate the help.
  12. Sogwap55 Member

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    And when you say the battery was toast, did you try a trickle recharger or was it just fried?

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