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    deedee64's Avatar
    deedee64 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 12, 2014, 02:37 PM
    Battery draining
    My micra has been in and out of a certain garage and paid 579 it no better my battery drains itself if car stood for two days so bought new battery had it fitted an still no better please please help as I love my little car
    cdad's Avatar
    cdad Posts: 12,700, Reputation: 1438
    Internet Research Expert
    		  
    #2

    Apr 12, 2014, 02:49 PM
    Is there a light in the trunk that may be staying on? Also sometimes an alternator can cause a drain if it has an internal regulator and the diode is messed up.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #3

    Apr 12, 2014, 02:56 PM
    . Check the alternator. With the engine running, the regulated battery voltage (RBV) should be 14 to 15 volts. Simply attach a multi-meter across the terminals. If the RBV is low, replace the alternator.

    . Check for parasitic battery drain; e.g. presets, ECM, security system, after market stereo system, glove box and trunk lights, etc. Drain should be less than 50 ma. Be sure you turn everything off in the car.
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