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Topic: 30 minutes of battery drain after opening/closing cab door (Read 251 times) previous topic - next topic
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30 minutes of battery drain after opening/closing cab door
I have a 2005 SOB on a 2004 E450 chassis. The engine battery seems to lose charge slowly over a few weeks of non-use, though the engine still starts OK. While trying to trace the cause, I noticed something odd: after opening/shutting a cab door, the battery drain would be about 2 amps for 30 seconds (that's the cab lights - not the odd part), followed by 0.5 amp drain for 30 minutes, then 0 drain. What is causing the 30 minutes of current draw?
2005 Jayco 24SS
Re: 30 minutes of battery drain after opening/closing cab door
Reply #1 –
Don't know, but probably normal, and not causing your problem. Your battery may be on the edge of its normal life, or you haven't fully charged it. Running a trickle charger for a week or so would be a first diagnostic step.

Steve
2004 FL
2013 Honda Fit
Re: 30 minutes of battery drain after opening/closing cab door
Reply #2 –
Quote from: Steve  - 
Don't know, but probably normal, and not causing your problem. Your battery may be on the edge of its normal life, or you haven't fully charged it. Running a trickle charger for a week or so would be a first diagnostic step.

The battery is a year old, and starts the engine easily, so I'll put a charger on it for the week and see how it goes. I'm still curious about what the vehicle is doing with the 0.5 amps for 30 minutes  >:(

As long as it does it only when the cab door is opened, it's not a problem, but I wonder if something else might trigger it and cause the slow discharge I think I'm getting.
2005 Jayco 24SS
 
Re: 30 minutes of battery drain after opening/closing cab door
Reply #3 –
A draw of 0.5 A for 0.5 hr is a consumption of 0.25 A-hr. Not significant unless repeated a hundred times or so...

Steve
2004 FL
2013 Honda Fit