A battery activation device uses ballistic pressure to directly activate a liquid reserve battery and simultaneously complete the battery ground circuit to the electronics system. The gas pressure generated during ballistic launch reacts upon a piston face that transforms the pressure directly into a linear force which is then applied to the liquid reserve battery for activation. An internal shear disc prevents unintentional battery activation from an accidental drop and if sufficient launch pressure has not been realized by device.

A battery activation device uses ballistic pressure to directly activate a liquid reserve battery and simultaneously complete the battery ground circuit to the electronics system. The gas pressure generated during ballistic launch reacts upon a piston face that transforms the pressure directly into a linear force which is then applied to the liquid reserve battery for activation. An internal shear disc prevents unintentional battery activation from an accidental drop and if sufficient launch pressure has not been realized by device.