Systems and devices incorporating magnetic switches

A portable lighting device, comprising:

• a first power source that is magnetically attractable and that has a first terminal with a first electrical polarity and a second terminal with a second electrical polarity;
• a second power source having a third terminal with the first electrical polarity and a fourth terminal with the second electrical polarity;
• a light source electrically connected to the first terminal and to the fourth terminal;
• and
• a biasing mechanism biasing the first power source toward an activated position where the second terminal is in contact with the fourth terminal to define an electrical circuit;
• wherein in the presence of a magnetic field the first power source moves into a deactivated position where the second terminal is spaced from the fourth terminal to open the electrical circuit.

A portable lighting device, comprising:

• a first battery including:
• a can having a first electrical polarity;
• and
• a cap surrounding a portion of the can and having a second electrical polarity;
• a light source electrically connected to the can and to an electrical contact;
• and
• a biasing mechanism biasing the first battery toward an activated position where the cap is in contact with the electrical contact to define an electrical circuit;
• wherein in the presence of a magnetic field the battery moves into a deactivated position where the cap is spaced from the electrical contact to open the electrical circuit.