Orientation agnostic battery placement

A battery-powered electronic device comprising:

• load circuitry having a positive electrical power connection and a negative electrical power connection;
• a battery compartment having a first terminal and a second terminal, the battery compartment being arranged and configured for receipt of a battery having a positive terminal and a negative terminal;
• a latch relay, connected between the load circuitry and the first and second terminals of the battery compartment,
• the latch relay having a first input terminal, a second input terminal, a first latch switch and a second latch switch and being configured to:
• upon receiving an input current between the first input terminal and the second input terminal in a first direction, actuate the first latch switch to connect the first terminal of the battery compartment to the positive electrical power connection of the load circuitry and the second terminal of the battery compartment to the negative electrical power connection of the load circuitry;
• and
• upon receiving the input current between the first input terminal and the second input terminal in a second direction, mechanically actuate the first latch switch to connect the first terminal of the battery compartment to the negative electrical power connection of the load circuitry and mechanically actuate the second latch switch to connect the second terminal of the battery compartment to the positive electrical power connection of the load circuitry;
• a latch bias circuit electrically connected to the first terminal and the second terminal of the battery compartment and configured to control the direction of the input current between the first input terminal and the second input terminal of the latch relay based on an orientation of the battery received within the battery compartment;
• and
• a latch relay bias circuit electrically connected between the first and second terminals of the battery compartment and the latch relay, wherein the latch relay bias circuit comprises a first transistor, a second transistor, a first capacitor and a second capacitor.

An orientation agnostic battery placement device comprising:

• a battery compartment having a first terminal and a second terminal, the battery compartment being arranged and configured for receipt of a battery having a positive terminal and a negative terminal;
• a latch relay comprising:
• a first output terminal;
• a second output terminal;
• a first latch switch electrically connected to the first terminal of the battery compartment,
• the first latch switch connecting the first terminal to:
• the first output terminal, in a state where the first terminal is electrically contacted by the positive terminal of a battery;
• and
• and
• a second latch switch electrically connected to a second terminal of the battery compartment,
• connecting the second terminal to:
• the second output terminal, in a state where the second terminal is electrically contacted by the negative terminal of the battery;
• and
• the first output terminal, in a state where the second terminal is electrically contacted by the positive terminal of the battery;
• a latch bias circuit electrically connected between the latch relay and the first and second terminals of the battery compartment;
• and
• a latch relay bias circuit electrically connected between the first and second terminals of the battery compartment and the latch relay, wherein the latch relay bias circuit comprises a first transistor, a second transistor, a first capacitor and a second capacitor.