04302714 is referenced by 64 patents and cites 15 patents.

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.

Title
Rechargeable battery charger system for charging testing, rejuvenation and preventative maintenance
Application Number
6/33818
Publication Number
4302714
Application Date
April 27, 1979
Publication Date
November 24, 1981
Inventor
Sheldon A Yefsky
5033 W. Morse, Skokie, 60077
IL, US
Agent
Robert M Ward
IPC
G08B 21/00
H02J 7/00
View Original Source