Battery condition indicator

A battery condition indicator comprising:

• at least one indicator electrode in electrical connection with a first terminal of a battery, the at least one indicator electrode comprising at least one redox material;
• a counter electrode for the at least one indicator electrode, the counter electrode is a second terminal of the battery;
• and
• a separator that is combined with an electrolyte, the separator that is combined with an electrolyte is positioned between the at least one indicator electrode and the counter electrode;
• wherein the at least one indicator electrode comprises a conductive substrate, the conductive substrate comprising a length, a first substrate redox zone, and at least a second substrate redox zone;
• the first substrate redox zone is adjacent to the at least one second substrate redox zone along the length of the conductive substrate;
• the first substrate redox zone comprises at least one redox material;
• the at least one second substrate redox zone comprises at least one redox material;
• the materials of the first and second substrate redox zones being different from one another;
• the counter electrode has an electrochemical capacity;
• the at least one indicator electrode has an electrochemical capacity;
• and the electrochemical capacity of the counter electrode is at least 3 times greater than the electrochemical capacity of the indicator electrode.