| 摘要 |
Unique battery reconditioning circuitry is described that may be advantageously utilized in a portable radio transceiver (100). Reconditioning is initiated by a microcomputer (120) in response to a pre-selected key sequence entered by way of a keyboard (114). The microcomputer (120) turns on a voltage switch (136) to deep discharge a Ni-Cad battery (118) and uses a voltage detector (140) to monitor the voltage Vb of the battery (118). The battery (118) is discharged from a nominal 7.5 V to 6 V in approximately two hours. The battery voltage Vb is converted to a digital value by the voltage detector (140). During the reconditioning process, the microcomputer (120) compares the digital value of the battery voltage Vb to a stored predetermined value to determine that the battery (118) has been discharged to 6 V. Once the battery (118) reaches 6 V, the reconditioning process is terminated and the portable radio transceiver (100) is turned off. The battery reconditioning circuitry of the present invention may be advantageously utilized in a variety of applications where portable equipment is operated from rechargeable batteries.
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