Capacity indicator for lead-acid batteries

  • US 5,304,433 A
  • Filed: 09/28/1992
  • Issued: 04/19/1994
  • Est. Priority Date: 09/28/1992
  • Status: Expired due to Fees
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First Claim
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1. A lead-acid battery having a capacity indicator which comprises a container, at least one partition dividing the container into cells, each of said cells including positive and negative plates and it separator positioned therebetween, one of said cells using the negative terminal cell and one being the positive terminal cell, a cover attached to said container and having at least one hole providing access to at least one of said cells, a positive terminal electrically connected to the positive plates in the positive terminal cell, a negative terminal electrically connected to the negative plates in the negative terminal cell, electrolyte contained in said cells, a reference electrode in electrical contact with the electrolyte, and electrical contact means allowing the voltage between the reference electrode and the negative plates in one cell to be determined, said voltage being indicative of the capacity of said lead-acid battery.

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