Patent ID: 6788925
Filing Date: 2004-09-07
Classification: H01M,H02J,H04B,Y02E

Abstract:
A durable portable radio for tradesworkers comprising:an enclosure; a radio disposed in said enclosure and including a radio receiver for receiving radio signals and generating audio output signals responsive thereto; an AC powered DC charger for powering said radio and charging a removable DC voltage power source, said charger generating a first DC output voltage having a magnitude sufficient to power said radio; a removable DC power supply disposed in said enclosure for powering said radio and being charged by said charger, said DC power supply being selected to generate a second DC output voltage having a magnitude in a range that includes voltages both lower and higher than the magnitude of said first DC output voltage from said charger; a power conversion circuit disposed between said radio and said removable power supply, to enable said removable DC power supply to power said radio regardless of the magnitude of the second DC output voltage from said removable power supply.