Patent ID: 7656118

Claim:
A booster apparatus, comprising: a first battery having a positive terminal and a negative terminal, a first cable coupled to the positive terminal of the first battery and being provided with means for connecting to a terminal of a depleted battery; a second cable coupled to the negative terminal of the first battery and being provided with means for connecting to another terminal of the depleted battery; a solid state switch coupled in series with one of the cables and the first battery; a polarity sensing circuit coupled between the first cable and the second cable, the polarity sensing circuit providing an enable signal to place the solid state switch in a conducting state when a correct polarity connection is made between the first battery and the depleted battery; a momentary switch connected between the first and second cable; and means for interrupting current flow to the depleted battery when the momentary switch is depressed, wherein the means for interrupting current flow comprises a resistor and a capacitor coupled in series with the momentary switch between the first cable and the second cable and another switch having a control electrode coupled between the resistor and the capacitor and providing a disabling signal to the solid state switch when the momentary switch is depressed.