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Battery capacity indicator for primary battery

  • US 4,060,666 A
  • Filed: 02/23/1976
  • Issued: 11/29/1977
  • Est. Priority Date: 02/23/1976
  • Status: Expired due to Term
First Claim
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1. A battery exhaustion indicator for use with a primary battery having at least one electrode which is depleted with use, comprising;

  • a fluid tight case, a scale carried by the case, at least one sensing arm, resiliently urged against a major face of the battery electrode which is depleted with use;

    said sensing arm comprises a means for contacting a large average space on the said electrode;

    a rotatable shaft secured to the sensing arm, a resilient means coupled to the rotatable shaft for urging the sensing arm against the electrode major face and an elongated pointer coupled to said arm and having a free movable end adjacent to the scale for indicating the thickness of the depleted electrode.

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