Rechargeable back-up battery system including a number of battery cells having float voltage exceeding maximum load voltage
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United States of America Patent
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Nov 3, 1992
Grant Date -
N/A
app pub date -
Aug 28, 1990
filing date -
Aug 28, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A back-up battery system for a switching equipment load in a telephone central office wherein the back-up battery system includes one or more rechargeable batteries having cells floated at a given float voltage and of a number such that when the batteries are switched in circuit across the load, the voltage of the batteries exceeds a minimum load voltage for a preselected period, and further being of a number such that the float voltage of the batteries exceeds a maximum load voltage.
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