Portable radio telephone set

Abstract

Abstract PURPOSE:To attain efficient operation by providing plural batteries and connecting other battery switchingly at a proper level when the remaining capacity of the battery in use reaches the proper level or below thereby continuing the normal operation of the operating section. CONSTITUTION:Two batteries 20, 21 are provided to a main body section 1. When a power voltage 4 supplied from the battery 20 or 21 to the operating section reaches the proper level required to maintain the operation of the operating section or below, a battery indicator 6 drives a changeover switch 5 and to switch a battery, e.g., 20 having so far connected to the operating section to the battery 21. The battery 21 is not in use in this case and in the fully charged state, then the operating section receives power supply with the proper level and keeps normal operation. Thus, the continuously efficient operation is attained.

Inventors

• 👤 Kazuhiro Kawashima
• 👤 川島　一廣

Bibliographic Details