Life indicator and lead-acid storage battery with life indicator

Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level

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429 90, 324435, 340636, H01M 1048

Patent

active

057502854

ABSTRACT:
The purpose of this invention is to provide a life indicator which can detect an occurrence of growth and obtain various information based on it. A life indicator of this invention having at least a sensor portion, a sending circuit, a receiving circuit and a light emitting diode. The sensor portion is adapted to be applied with a pressure based on an elongation of a positive plate directly or indirectly, so as to detect the applied pressure as a change of electric parameter.

REFERENCES:
patent: 4992340 (1991-02-01), Tidwell et al.
patent: 5130658 (1992-07-01), Bohmer
patent: 5304433 (1994-04-01), Cherng
Japio Abstract Section E, Section No. 623, vol. 12, No. 215, p. 66 & JP 63010476 (Shin Kobe) * Abstract Jan., 1988.
Japio Abstract Section E, Section No. 527, vol. 11, No. 231, p. 130 & JP 62047975 (Shin Kobe) * Abstract Mar., 1987.

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