Abstract: The jaws of the clamp are pivoted towards each other in a locked position of the clamp by a toggle arrangement. An electrical connection between the jaws of the clamp and the cable are effected only when the clamp is in its locked position.

Abstract: The invention relates to a battery cable jumper arrangement. The arrangement has a first pair of cables and clamps at the connecting ends of each cable of the first pair of cables to connect each cable end to a respective terminal of a source of D.C. power. The arrangement further includes a second pair of cables with clamps at the connecting ends of each cable of the second pair of cables for connecting each cable end to a respective terminal of a battery to be recharged. A first sensor, such as a three-position solenoid, senses the polarity of connection of the first pair of cables at the source of power, while a second sensor, such as a three-position solenoid, senses the polarity of connection of the second pair of cables at the battery.