If a jump starter has a polarity sensing circuit, checking for reverse polarity, there will be no power to the clamps until they are connected to the battery, at which point the circuit senses correct polarity. When connected, the circuit will put power to the clamps.

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Email: customerservice@baccusllc.com
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Mail: Baccus Global LLC
595 S Federal Hwy Ste 210
Boca Raton, FL 33432