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Automatic battery charge apparatus and method

  • US 4,270,080 A
  • Filed: 12/14/1978
  • Issued: 05/26/1981
  • Est. Priority Date: 12/14/1978
  • Status: Expired due to Term
First Claim
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1. An automatic battery charger for charging a storage battery capable of conducting a battery charging current and generating a battery voltage, said charger comprising:

  • battery cable means for connecting the battery to the charger;

    current control means operable in a first mode for conducting through the cable means a charging current regulated at a first predetermined level, and operable in a second mode for conducting through the cable means a charging current regulated at a second predetermined level less than the first predetermined level;

    voltage monitor means operable in a first mode for generating a first monitor signal in response to a first battery voltage condition, and operable in a second mode for generating a second monitor signal in response to a second battery voltage condition less than the first battery voltage condition; and

    sequencing means for operating the current control means and voltage monitor means in their first modes, for operating the current control means and voltage monitor means in their second modes in response to the first monitor signal, and for enabling the current control means to reduce the charging current in response to the second monitor signal, whereby the battery is automatically charged at a rapid yet safe rate.

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