PORTABLE DEVICE FOR DISPLAYING BATTERY CHARGE INFORMATION, AND BATTERY CHARGE INFORMATION DISPLAY SYSTEM

摘要

PROBLEM TO BE SOLVED: To offer convenience to a user by displaying charge information based on prediction, even when a portable device and an on-vehicle device cannot communicate with each other.

SOLUTION: During charging of a battery, charge characteristic data on the battery are transmitted from the on-vehicle device to the portable device 200. In the portable device 200, when charge information cannot be received from the on-vehicle device after pressing of a charge inquiry button 25 to inquire of the on-vehicle device about a battery remaining amount and time until completion of charging, a battery predicted remaining amount or predicted time until completion of charging is calculated by using previously obtained charge characteristic data, and the information 23c is displayed on a display section 23.

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