Patent ID: 8274263

Claim:
A battery saver, comprising: a thin disc adapted for insertion in a battery housing between a load device and a battery powering the load device; a charge pump having an input and an output, the battery being adapted for being removably connected to the input of the charge pump; a first electronic switch having a switch control output switchable between a first conductive and a first non-conductive state, the first electronic switch having an input connected to the charge pump output; a second electronic switch having an input connected to the switch control output of the first electronic switch, the second electronic switch having an output switchable between a second conductive and a second non-conductive state, the second electronic switch output being adapted for placement between the battery and the load device, thereby selectively connecting the battery to the load device based on the switch control output of the first electronic switch; a resistor in combination with a capacitor connected to the charge pump output and the first electronic switch input, the resistor and capacitor combination setting a first threshold timing duration for changing the switch control output of the first electronic switch to the first conductive state; a vibration sensor responsive to vibratory movement of the load device, the vibration sensor being connected between the resistor-capacitor combination and ground, thereby setting a second threshold timing duration for changing the switch control output of the first electronic switch from the first conductive state to the first non-conductive state, the second threshold timing duration being less than the first threshold timing duration, thereby resulting in a substantially small time delay for connection of the battery to the load device when the load device begins to vibrate and a substantially greater time delay for disconnection of the battery from the load device when the load device has ceased vibrating; and wherein the charge pump, the first electronic switch, the second electronic switch, the resistor-capacitor combination, and the vibration sensor are mounted on the thin disc.