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The effects of intermittent charging on VRLA battery life expectancy in telecom applications

Research output: Contribution to journalConference articleScientificpeer-review


Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalINTELEC, International Telecommunications Energy Conference (Proceedings)
Publication statusPublished - 1 Dec 2002
Externally publishedYes
Publication typeA1 Journal article-refereed
Event24th International Telecomunications Energy Conference (INTELEC 2002) - Montreal, Que, Canada
Duration: 29 Sep 20023 Oct 2002


A survey of a 2.5-year testing of VRLA batteries at elevated ambient temperature of 43°C is reported. The batteries were charged using float charging and standby charging or intermittent charging principles. The goal of the research was to verify the assumed adverse effects of continuous float charging in respect to intermittent charging. No clear correlation with the charging modes was noticed. The shorter than expected life of VRLA batteries may be addressed to the shortages in charging procedures rather than to continuous float charging. It was also noticed that the ineffective charging might be more harmful when using intermittent charging than when using continuous float charging.