Battery jumper cable connection apparatus and methods

Details Battery jumper cable connection apparatus and methods Battery jumper cable connection apparatus and methods

H - Electricity

02

J

H02J 7/00 (2006.01) H01R 11/00 (2006.01)

Patent

CA 2432421

Polarity independent jumper cables are provided for connecting vehicle batteries in parallel, for example when trying to start a vehicle that has a flat battery. The apparatus disclosed has terminal connectors to connect to the terminal posts of each battery. The terminal connectors lead to a switching and control circuit that automatically determines the batteries polarities and makes connections to connect the batteries in parallel, so that users do not need to have any knowledge of the battery polarities. In particular, an indication of the relative state of charge of the batteries is provided prior to the circuit establishing the connections so that when the connection is made, it is made for a predetermined period of time in order to control the current flow through the apparatus. Furthermore, the connection between the batteries is made only when the change in load is sensed on one of the batteries, for example when a vehicle starter motor is connected to one of the batteries.

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