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Battery drain

GHG
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GHG Member

GHG

Posted
Posted

My '97 C2S has suffered from flat batteries after car the being unused for a few days. Battery is new and no cell problems. I leave door unlocked and all ancilleries (interior lights etc.) are disabled. I had a Moberg Bluetooth/Telephone device fitted some time ago, could this be the source of the problem? Anybody had similar battery drain problems?

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JFP in PA Member

JFP in PA

Posted
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Posted

Welcome to RennTech :welcomeani:

You need to test the parasitic draw on the battery when the car has powered down (about an hour or so after everything is shut off).  Should be 40-60 mA max, more than that says something else is drawing the power.

Ahsai Member

Ahsai

Posted
Posted

Second what JFP said. Depends on how your bluetooth thingy is hooked up and it could very well be the culprit, especially if you never had similar problem before.

  • 3 weeks later...
GHG Member

GHG

Posted
  • Author
Posted

Thanks for your input guys. Disconnected Mobridge and still draws 70 milliamperes. I am resigned to use a trickle charger when car is not used for over 2 days!

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JFP in PA Member

JFP in PA

Posted
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Posted

With the multimeter still hooked up to the car, try pulling the fuses one at a time until you hit the one causing the draw.

  • 7 years later...

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