Overnight battery drain

Tiny
JOHN BOSSOLT
  • MEMBER
  • 2007 DODGE CARAVAN
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
Second new Exide, same problem. The battery drains overnight. No clue about parasite.
Sunday, October 22nd, 2017 AT 5:45 AM

1 Reply

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
You will have to disconnect the negative battery cable at the battery and then place an DC ammeter inline with the disconnected cable with the negative lead on the negative battery post and positive lead on the end of the cable. The DC amperage reading with everything off, key removed should not be more than 50 mA, that is 0.050 amps. If it is and I suspect it will be, start removing the fuses one at a time until the ammeter drops safely below 50 mA. Then find out what on that fuse's circuit is causing the problem and start by first hooking the battery back up, put all the fuses back in, power up that fuses's circuit and find out what does not work on that circuit. It may give you a clue as to what is causing it.
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Sunday, October 22nd, 2017 AT 6:35 AM

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