Electrochromic thin film state-of-charge detector for on-the-cel

Details Electrochromic thin film state-of-charge detector for on-the-cel Electrochromic thin film state-of-charge detector for on-the-cel

1994-05-20

1995-10-17

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With measuring, testing, or indicating means

For charge or liquid level

324435, H01M 1048

Patent

active

054589924

ABSTRACT:
A tester for use in determining the voltage and state-of-charge of a battery. The tester can be permanently mounted on the battery and employs an electrochromic cell which changes visual appearance, for example, color or intensity of color when electrically connected across the terminals of a battery. The electrochromic cell undergoes an oxidation/reduction reaction on direct application of the DC potential of the battery. The color of the electrochromic cell can be compared with a color comparison chart to determine the condition of the battery. The tester can be permanently electrically connected to the battery or, preferably, can be connected momentarily to determine the state of the battery.

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