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Battery Fade When On Acc Just Radio On ?


crispinchurch
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is this right 

sit at school waiting for them to come out in a bout a hour my battery will go flat with just radio on 

i put amp meter between earth wire and battery 

car locked 1.5 amp drain

car unlocked with key on acc  2 amp drain

radio on with dab box 5 amp

dvd 6 amp drain 

should a battery drain 6 amp flat enough it will need a jump starter 

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should a battery drain 6 amp flat enough it will need a jump starter

Yes unless the battery is in good nick. A battery only has one job, to start the car, once started an alternator runs all the stuff happily. The normal condition of the battery pulls 0.015 to 0.025, just fifteen to twenty five milliamperes, its going to pull 25mA just for the PCM clock etc even when nothing is on and it pulls till 15 minutes after park & alarm when the computers are then put to sleep.

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