Multi mode cordless battery charger

Details Multi mode cordless battery charger Multi mode cordless battery charger

1992-09-29

1994-01-25

Peckman, Kristine L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 21, 320 22, H02J 700

Patent

active

052819043

ABSTRACT:
A self contained battery charger is disclosed for use in charging an external battery through a pair of connecting cables. The battery charger comprises an internal battery for providing a first predetermined battery voltage and a DC to DC converter, connected to the internal battery, for converting the first predetermined voltage to a low current signal. First switching circuitry is provided for communicating a low current signal to the external battery. Status monitoring circuitry is provided for monitoring voltage and/or current conditions when said low current signal is communicated to the external battery. Second switching circuitry is provided for communicating a high current signal to the external battery in response to sensed voltage and/or current conditions.

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patent: 5202617 (1993-04-01), Nor

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