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Old 08-28-2011, 08:33 PM   #1
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How long is too long -- radio on battery power

So I took my '05 TJ into the woods of Mt. Hood, Oregon this afternoon, found a nice spot, and relaxed with some music...

But I started to think... How long, would you say, one could listen to their stereo (mine's a Kenwood, connected to an iPod, moderate volume) without having to worry about losing too much battery charge? Couple of hours? Most of a day?

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Old 08-28-2011, 08:50 PM   #2
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What kind and how good of condition is the battery? Any amps or subs?

And to answer your question, just long enough that it will still start!

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Old 08-28-2011, 09:18 PM   #3
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I'm guessing at least a few hours. CD or cassette would suck for juice. People use their radio to listen to a couple of movies at a drive in.
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Old 08-28-2011, 09:30 PM   #4
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I'm guessing at least a few hours. CD or cassette would suck for juice. People use their radio to listen to a couple of movies at a drive in.
That's funny, someone said the same thing to me the other day when I asked. Makes sense.

@SirGeorgeKillian, battery seems ok. No subs or anything aftermarket except for the radio itself.
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Old 08-28-2011, 09:43 PM   #5
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ive ran mine for hours on end with a yellow top optima
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Old 08-28-2011, 10:42 PM   #6
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ive ran mine for hours on end with a yellow top optima
Same
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Old 08-28-2011, 11:58 PM   #7
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I ran mine for 20 minutes on my Red Top and I didn't have enough Juice left to start the Jeep.

Then again, my Red Top was 14 years old and had been drained to nothing by my stupid, haunted dome lights a few days earlier. I've done it in other vehicles for a couple of hours with no problem. Figure the amp draw of you're stereo and do a little figuring.
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Old 08-29-2011, 12:20 AM   #8
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yea you can go for a while if im just listening to music tho i turn my subs off a 1000 watt sub, 1000 watt amp and another 300 watt amp+ 4 speakers.= sketch when your in the middle of no where
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Old 08-29-2011, 12:28 AM   #9
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I have ran my radio and subs hooked up to my iPod for like 6 hours straight and it started fine! But if it really came down to it if you had a manual you could bump start it!
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Old 08-29-2011, 10:48 PM   #10
Knows a couple things...

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First, you cannot bump start any modern Jeep (most modern cars too) that has a dead battery. Absolutely. If the battery is only weak and not completely dead, perhaps it can be bump started but absolutely not if the battery is truly dead. If you don't believe this, park on a hill and disconnect one of the battery connections and see if you can roll-start it. It won't start since the alternator requires +12v from the battery before it will produce power.

And that big battery our Jeeps have will run a common radio for weeks. Think of the tiny batteries inside our various electronic devices and how long they last, or the old boom boxes with 4-6 D-Cell batteries that would play for a week or longer. Our Jeep batteries are huge when you compare them to the batteries inside common electronic gizmos that last a long time.
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Old 08-29-2011, 11:21 PM   #11
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Hey dmfpdx, welcome to WF, I'm in Portland and jeep around the mountains quit a bit. Look in the Oregon and Washington forums. We post runs, events and meet n greets there. Next meet n greet is
Sunday, September 11 · 5:00pm - 7:00pm
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Leonardo's Pizzeria
16505 SE 1st Street
Vancouver,wa


Hope you can make it, James
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Old 08-31-2011, 01:34 AM   #12
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Originally Posted by jameslee97206 View Post
Hey dmfpdx, welcome to WF, I'm in Portland and jeep around the mountains quit a bit. Look in the Oregon and Washington forums. We post runs, events and meet n greets there. Next meet n greet is
Sunday, September 11 · 5:00pm - 7:00pm
Location
Leonardo's Pizzeria
16505 SE 1st Street
Vancouver,wa


Hope you can make it, James
Nice! Well I'm kind of a wuss at this point since I just got'er, but I may come out and say hey.

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