Battery pack for a portable radiotelegraphic unit

Details Battery pack for a portable radiotelegraphic unit Battery pack for a portable radiotelegraphic unit

1988-10-12

1990-03-20

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

429 7, 429 92, H07M 200

Patent

active

049101030

ABSTRACT:
The present invention relates to a battery pack for supplying power to a portable radiotelegraphic unit. The battery pack comprises a rechargeable battery whose voltage varies with time in such a manner that is residual capacity can be estimated from the detected voltage of the battery, a voltage detector for detecting the voltage of the battery, and an indicator for visibly displaying the voltage detected by the voltage detector. With the above construction, the battery can be recharged when the battery voltage reaches a lower value and the discharging of the battery can be stopped when the battery voltage reaches an upper value. As a result, the battery is prevented from the overcharging and overdischarging, and the life and reliability of the battery are increased.

REFERENCES:
patent: 3196357 (1965-07-01), Hoag
patent: 3526822 (1970-09-01), Dickfeldt et al.
patent: 3639173 (1972-02-01), Stachurski

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