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A critical review of using Peukert-equation for determining the remaining capacity of lead-acid and lithium ion batteries

A critical review of using Peukert-equation for determining the remaining capacity of lead-acid and lithium ion batteries
A critical review of using Peukert-equation for determining the remaining capacity of lead-acid and lithium ion batteries
In many applications it is essential to predict the remaining capacity of a battery reliably, accurately and simply. Several existing techniques for predicting the remaining capacity of a lead-acid battery discharged with a variable current are based on variants of Peukert’s empirical equation, which relates the available capacity to a constant discharge current. This paper presents a critical review of these techniques in the light of experimental tests that were carried out on two lead-acid commercial batteries. The relevance of these Peukert’s equation based techniques to lithium-ion batteries is also discussed in the light of tests carried on a lithium-ion power battery. The basic conclusion of the paper is that Peukert’s equation cannot be used to predict the state of charge of a battery accurately unless it is discharged at a constant current and constant temperature.
battery testing, state-of-charge, modelling, lead-acid battery, lithium-ion battery
0378-7753
395-400
Doerffel, Dennis
2521109b-4e50-489d-83f1-cd260a63232c
Abu-Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Doerffel, Dennis
2521109b-4e50-489d-83f1-cd260a63232c
Abu-Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9

Doerffel, Dennis and Abu-Sharkh, Suleiman (2006) A critical review of using Peukert-equation for determining the remaining capacity of lead-acid and lithium ion batteries. Journal of Power Sources, 155 (2), 395-400. (doi:10.1016/j.jpowsour.2005.04.030).

Record type: Article

Abstract

In many applications it is essential to predict the remaining capacity of a battery reliably, accurately and simply. Several existing techniques for predicting the remaining capacity of a lead-acid battery discharged with a variable current are based on variants of Peukert’s empirical equation, which relates the available capacity to a constant discharge current. This paper presents a critical review of these techniques in the light of experimental tests that were carried out on two lead-acid commercial batteries. The relevance of these Peukert’s equation based techniques to lithium-ion batteries is also discussed in the light of tests carried on a lithium-ion power battery. The basic conclusion of the paper is that Peukert’s equation cannot be used to predict the state of charge of a battery accurately unless it is discharged at a constant current and constant temperature.

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More information

Submitted date: 6 October 2004
Published date: 2006
Keywords: battery testing, state-of-charge, modelling, lead-acid battery, lithium-ion battery

Identifiers

Local EPrints ID: 26806
URI: http://eprints.soton.ac.uk/id/eprint/26806
ISSN: 0378-7753
PURE UUID: ca737401-e2a5-4b3f-94b4-a00d8874c038
ORCID for Suleiman Abu-Sharkh: ORCID iD orcid.org/0000-0001-7335-8503

Catalogue record

Date deposited: 19 Apr 2006
Last modified: 16 Mar 2024 02:48

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Author: Dennis Doerffel

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