Importance

Loading Importance Indicators...

Abstract

A battery capacity meter for a battery includes a controller, a display unit for displaying a present dischargeable absolute capacity of the battery and a display light for displaying a condition of the battery under which the present dischargeable absolute capacity of the battery amounts to a maximum of chargeable absolute capacity of the battery. The present dischargeable absolute capacity and the maximum of chargeable absolute capacity of the battery are calculated on a basis of a charging or discharging current and a temperature of the battery. Since the battery capacity meter can display both of the present dischargeable absolute capacity and the maximum of chargeable absolute capacity under the temperature of the battery at charging, it is possible for a driver to confirm the chargeable absolute capacity as a residual capacity of the battery during using it. Moreover, at charging, it is possible to confirm a condition under which the charging has been completed to the maximum of chargeable capacity determined by the battery temperature at that time thereby to prevent a shortage for the full-charging.

Loading the Abstract Image...

First Claim