Power tool with battery power supply

A power tool with battery power supply, comprising

• a main body having a motor and a frame with a slot for receiving a detachable battery package;
• a recess formed in the main body;
• the detachable battery package having an inner portion and an outer portion, the inner portion having a latch connected to a knob on the outer portion of the detachable battery package;
• a non-mechanical biasing assembly which exerts a force on the detachable battery package such that when the detachable battery package is in a first position, the latch is engaged in the recess formed in the main body an electrical connection is formed between electrodes on the detachable battery package and electrical connectors on the main body, and when the detachable battery package is in a second position, the latch is disengaged from the recess and the force on the detachable battery package prevents the electrodes on the detachable battery package from being in electrical contact with the electrical connectors on the main body.

A power tool with power supply, comprising:

• a main body and a detachable power supply package, one of which includes a frame for detachably receiving the other;
• a motor contained in the main body;
• a recess formed in one of either the main body or the power supply package, the other one of either the main body or the power supply package having a latch being moveable between a first position and a second position, wherein when the latch is in the first position the latch is engaged in the recess and an electrical connection is maintained between the motor and the power supply package;
• and
• a non-mechanical biasing assembly which exerts a repulsive force on the power supply package such that when the latch is in the second position, the latch is disengaged from the recess and the repulsive force causes the electrical connection between the detachable power supply and the motor to be eliminated.