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Battery charging method and apparatus

  • US 5,307,001 A
  • Filed: 05/05/1992
  • Issued: 04/26/1994
  • Est. Priority Date: 05/05/1992
  • Status: Expired due to Term
First Claim
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1. A gas point detection method for use in charging a battery that reaches a gassing point while being charged comprising the steps of:

  • (a) measuring a charge voltage;

    (b) waiting a predetermined amount of time;

    (c) measuring a second charge voltage; and

    (d) comparing the first voltage to the second voltage and determining a gassing phase to be a predetermined amount of voltage difference over the predetermined time period.

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