Yuasa Battery Co., Ltd.

Hiroto Nakashima

Kenjiro Kishimoto

Yoshio Kasai

Eiji Hohjo

Osamu Matsushita

A lead-acid battery using dilute sulfuric acid as the electrolyte, has a plate group composed of at least one positive plate, one negative plate and an intervening separator. Whiskers of at least one type selected from carbon, graphite and potassium titanate, having an electronic conductivity, with a diameter of 10 .mu.m or less and an aspect ratio of 50 or more, and a specific surface area of 2 m.sup.2 /g are mixed with at least one of the active materials of the positive and negative plates by 0.01 to 10 wt. % of the active material so as to connect the active material particles mutually and/or active material and current collector electronic conductively.

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Takatsuki, Japan

Hiroto Nakashima