Title :
AC impedance spectra of field-aged VRLA batteries
Author :
Hawkins, J.M. ; Hand, Ross G.
Author_Institution :
Telstra Res. Labs., Clayton, Vic., Australia
Abstract :
This paper reports on studies into the AC impedance spectra and behaviour of field-aged VRLA batteries. The AC impedance spectra of “normal” and “abnormal” field-aged batteries are presented. Preliminary results indicating how the variation of the battery impedance with frequency might be used to identify aging characteristics are also shown
Keywords :
ageing; electric impedance measurement; lead; secondary cells; telecommunication power supplies; AC impedance spectra; Pb; Pb-acid batteries; abnormal field-aged batteries; aging characteristics; field-aged VRLA batteries; normal field-aged batteries; telecommunication applications; Aging; Battery charge measurement; Frequency; Impedance measurement; Laboratories; Maintenance; Power system measurements; Power systems; System testing; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1996. INTELEC '96., 18th International
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-3507-4
DOI :
10.1109/INTLEC.1996.573403
