×

Battery maintenance system

  • US 5,196,779 A
  • Filed: 11/16/1989
  • Issued: 03/23/1993
  • Est. Priority Date: 11/16/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of determining the need for charging a nickel cadmium battery, comprising:

  • a. sensing the battery voltage of said battery;

    b. when said sensed battery voltage is greater than or equal to a first predetermined voltage and less than or equal to a second larger predetermined voltage, setting a timer out to a first short time and analyzing whether said battery voltage is diminishing; and

    ,c. When said analysis reveals that said battery voltage is not diminishing, saving said battery voltage, setting a drop delay to a second longer time and charging said battery.

View all claims
  • 18 Assignments
Timeline View
Assignment View
    ×
    ×