Hook up either clamp to either battery terminal and the electronic box in the middle automatically detects the polarity and ensures that the proper connection is made.
Smart jumper cables review.
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Read honest and unbiased product reviews from our users.
Smart jumper cables have a built in unit that will notify you if the cables are connected improperly.
Read honest and unbiased product reviews from our users.
Topdc smart jumper cables 4 gauge 20 feet heavy duty booster cables with reverse hook up and alternator indicator battery condition tester 4awg x 20ft 4 8 out of 5 stars 61 23 99 23.