Rechargeable battery charger system for charging testing, rejuve

Details Rechargeable battery charger system for charging testing, rejuve Rechargeable battery charger system for charging testing, rejuve

1979-04-27

1981-11-24

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 14, 320 39, 320 48, 340636, H02J 700, G08B 2100

Patent

active

043027148

ABSTRACT:
The present invention is directed to a method for automatically maintaining rechargeable batteries at maximum capacity and includes the steps of detecting the presence of a battery, deep discharging the battery to a predetermined level above cell reversal, recharging the battery to its rated capacity, discharging the battery at a controlled rate while measuring battery output voltage and determining whether its capacity is above or below a selected minimum, deep discharging and recharging if the battery is below the selected minimum until reversible memory effects are removed, providing a positive indication of battery failure, maintaining the full battery capacity by trickle charging, and periodically repeating the above steps to avoid onset of battery memory.

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patent: 4081743 (1978-03-01), Madden

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