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Quick battery question

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  • 23-09-2013 8:15pm
    #1
    bombidol
    Closed Accounts Posts: 5,638 ✭✭✭


    Drove from Ireland to Poland a few days ago. Meeting up with friends tonight and want to run the stereo (car radio). I'm plugged into the wall so I have power. In just worried that the stereo will be powered off the car battery instead of outside power. Don't want to kill my battery for the sake of a few tunes.


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    #2
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Car radio runs off the starter battery. I can't say if your charger charges just the leisure battery or both. Run a jump lead from your leisure battery to your starter while the radio runs if you are worried. This will charge the starter from the charging leisure battery.
    Really a few hours of radio or aux. input shouldn't upset the starter, I run mine for days sometimes. Playing a cd or cassette in the radio is another matter and will drain it.

    Don't leave the jump leads connected after bedtime, mismatched batteries don't like being paralleled for more than a few hours.

    In any case you can always jump start yourself in the morning off the fully charged leisure battery.


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    #3
    bombidol
    Closed Accounts Posts: 5,638 ✭✭✭bombidol


    Decided to run the laptop off the sockets instead. At least that's coming from shore power. Don't want to risk it.


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    #4
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Can't fault your wisdom.

    If you have a voltmeter the starter is charging if it's above 13.0v.
    If it's not charging then as long as you stay above 12.4v/12.5v you'll have no problem.


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    #5
    kelbal
    Registered Users Posts: 839 ✭✭✭kelbal


    I play the radio for a few hours and also charge my phone off the starter battery while parked up, never had a problem


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