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Safety & Accident

How to Jump-Start a Battery

Posted on January 13, 2017   |   1381 views

Batteries tend to die at the most inopportune times, right? Here's a quick review of how to safely jump-start your battery to get back on the road. Video courtesy of Advance Auto Parts. For the full fleet safety tip, click here.

Comments

  1. 1. Wayne Allen [ January 17, 2017 @ 10:58AM ]

    The AAA safety tip “Jump-Starting the Right Way” tip was very good except with one MAJOR error. (dated January 13, 2017 and received today 1/17/17)
    Item 5 says to start the other vehicle (the one doing the jumping) and then try to start the dead vehicle.
    With today’s computerized vehicles the (charged) vehicle should NEVER be running when the dead vehicle is being cranked. Gone are the days of mechanical/electronic voltage regulators.
    They are now controlled by the ECM. Today’s alternators can easily put out over 14 volts when asked to do so. When hooked to another car with a dead battery. The computer sees the average voltage of the good and the dead battery. It will attempt to “remedy” the fake low condition and have the alternator put out maximum charging effort. Once the “jumped” vehicle starts the alternator in the “dead” vehicle will attempt to do the same. This causes a momentary overcharge/high voltage spike that can cause multiple problems down the road.
    Convincing one of the local police departments to only jump from a non-running vehicle or from a jump box. Virtually eliminated the odd engine control failures that just seemed to never end once they started.
    I understand the need to start the “jumping” vehicle in an attempt to charge the dead battery. But NEVER, NEVER attempt to start the dead one while the other is running.
    Sorry to be so picky. But this error can cause additional cost and headaches that people in the fleets don’t need.
    (I am also an ASE certified master tech.)

  2. 2. Tim Burford [ January 17, 2017 @ 03:35PM ]

    Great advise Wayne,

    And this also applies to many other fleet vehicles and rolling stock, including motorcycles.

    With today’s computerized vehicles the (charged) vehicle should NEVER be running when the dead vehicle is being cranked. Gone are the days of mechanical/electronic voltage regulators.

 

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