Yuasa Corporation

Yuasa Battery Co., Ltd.

Aya Nishino

Shigeru Sano

Tadashi Okutoh

Tadamasa Akutagawa

Katuo Ehara

Kazuya Kuriyama

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.

Life indicator and lead-acid storage battery with life indicator

A life indicator is so designed that an electric current flows to a light emitting diode utilizing a battery as a power source when two electrodes are electrically connected. The two electrodes are so installed as to be electrically connected by passing water through a water passage communicating with an objective equipment, and the discharge life of the battery is set equal to the service life of the equipment.

Life indicator and cartridge for indicating total water flow

This invention relates to a lithium secondary battery, in which a nonaqueous solvent is used for an electrolyte and a carbonaceous material is used for a negative active material; and especially relates to the electrolyte. Namely, the electrolyte includes one or more kinds of tertiary amines, and the tertiary amines include one or more substituents having two or more numbers of carbon. Further, the electrolyte includes a cyclic ester and includes a solvent having a reduction potential higher than that of the cyclic ester.

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Takatsuki, Japan

Aya Nishino