The electrical circuit and the colour changing thermochromic display that measures battery capacity is printed on a thin flexible plastic strip using thermochromic and conductive ink. Battery capacity is visualized on a thermochromic scale that changes colour from the heat generated when the circuit is charged electrically, causing a calibrated colour change providing information as to battery performance.
This capability can be customised to create various battery powered colour changing designs, displays and messages. Numerous colours are available.
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