How long till battery drain while lisitng to radio car off? Jump car battery dead
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Old December 22nd, 2011, 05:37 PM   1 links from elsewhere to this Post. Click to view. #1
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How long till battery drain while lisitng to radio car off? Jump car battery dead


So while working on my interior I was listening to my car radio (car off) and I had my iphone charging up plug in.

After about 1 - 1 1/2 hours my battery died.

Is this normal? How long does it usually takes for battery to die while listing to the radio with the car off?


Also whats crazy is I jump start it this morning and let my car run maybe for like 3-5 min or so. I turned it off and restarted the car and it started fine. Did this 2 times. Now 3 hours later I go back out to my car and it wont start (clicking) battery is dead again.


So did I need to let it run a little longer to fully charge the battery, maybe drive it around the block or so?

Also wouldnt the car not restart if the battery was charged after jumping it
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Old December 22nd, 2011, 05:54 PM   #2
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Well, if you have the stock stereo I don't know how long it can run, but when aftermarket amplifiers are in the mix, the time goes down significantly. I can't run my stereo on accessory for more than 30 minutes or so or I have a dead battery.
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Old December 22nd, 2011, 06:09 PM   #3
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Originally Posted by baleger92 View Post
Well, if you have the stock stereo I don't know how long it can run, but when aftermarket amplifiers are in the mix, the time goes down significantly. I can't run my stereo on accessory for more than 30 minutes or so or I have a dead battery.
Do you have a stock stereo no amplifier??

Just checked. I have a duralast gold battery and it has a 8 year warranty. I know its about 7 years old so i will probably go and exchange it
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Old December 22nd, 2011, 06:12 PM   #4
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I have a 50x4 watt RMS four channel and a 800 watt RMS mono for subs. A lot of power needed in my system. After a battery dies, either put it on trickle charge overnight or take it for a good spin around town to charge it back up.
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Old December 22nd, 2011, 06:16 PM   #5
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Only thing aftermarket on my mustang is the headunit. I had it play for like 3 hours, uninterrupted, and it cranked right up. No problems
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Old December 22nd, 2011, 06:45 PM   #6
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I drove my Mustang around for a day with the alternator unhooked and then a day later ran a compression test and even after all that cranking it still turned over nice and fast like it was fully charged, BTW I have a Diehard battery from Sears.
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Old December 22nd, 2011, 06:57 PM   #7
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Originally Posted by SALEEN961 View Post
I drove my Mustang around for a day with the alternator unhooked and then a day later ran a compression test and even after all that cranking it still turned over nice and fast like it was fully charged, BTW I have a Diehard battery from Sears.
Possible, because the car does not use the battery after it starts
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Old December 22nd, 2011, 07:03 PM   #8
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Originally Posted by StoneColdStang View Post
Possible, because the car does not use the battery after it starts
It does when the alternator isn't hooked up, something has to run the fuel pump and the rest of my electric goodies. I'm just saying that I was able to drive around for a few hours and crank my car 8 times without draining the battery even though I had no alternator. The voltage regulator went out on mine and I wasn't going to leave it hooked up so it could create voltage spikes and take out my ECU.
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Old December 22nd, 2011, 08:40 PM   #9
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Probably need a new battery
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AnswerParty | If i run the radio for 45 min with out the car turned on will it drain thw battery on a 2005 ford? This thread Refback December 2nd, 2013 01:43 PM

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