Physical key to facilitate an inactive mode for a state-of-charge indicator within a battery

A method of making a device to indicate an amount of available charge in at least one battery cell comprising the steps of:

• providing a battery with at least one battery cell;
• coupling a state-of-charge indicator to said at least one battery cell within said battery,
• wherein said state-of-charge indicator comprises:
• a ground signal;
• a clock signal;
• and
• circuitry coupling said ground signal and said clock signal;
• and
• configuring said state-of-charge indicator to operate in a hibernation mode by coupling a detachable physical key to said ground signal and said clock signal.

A system to indicate a battery state of charge, comprising:

• a battery, wherein said battery comprises:
• at least one battery cell,
• a state-of-charge indicator coupled to said at least one battery cell to indicate an amount of charge remaining in said at least one battery cell,
• wherein said state-of-charge indicator comprises:
• circuitry to operate said state-of-charge indicator in at least one of an active mode, a hibernate mode and a sleep mode, wherein said state-of-charge indicator operating in said sleep mode consumes less charge from said at least one battery cell than said state-of-charge indicator operating in said active mode, and said state-of-charge indicator operating in said hibernate mode consumes less charge from said at least one battery cell than said state-of-charge indicator operating in said sleep mode, and
• a physical key detachably coupled to said state-of-charge indicator to control a mode of operation of said state-of-charge indicator;
• and
• an electronic device coupled to said battery.