A new pH phenomenon to predict polarity reversal in lead-acid cells

J. Mooney, A. Alaswad*, A. Cruden

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper discusses new experimental work investigating the change in pH of the electrolyte of individual cells in Lead-Acid batteries during discharge with a view to predicting cell polarity reversal and thereby pre-empting potentially catastrophic failure in batteries. The discharge tests were carried out on batteries which were classified as ‘new’ and ‘aged’ as a means of indicating their state of health. A new pH phenomenon has been recorded for the first time in this paper as evidenced by experimental results including measurement of half-cell potentials. The trends observed during the discharge tests could be used as additional means of indicating impending cell reversal in series connected lead-acid cells.

Original languageEnglish
Pages (from-to)100-109
Number of pages10
Publication statusPublished - 1 Oct 2017


  • Batteries
  • Cell
  • Energy storage
  • Lead-acid
  • pH
  • Voltage and condition monitoring


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