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Superimposed AC ripple on lead-acid batteries used in float service has the potential to produce battery heating depending upon the AC magnitude and frequency. Battery service life is roughly halved the life for every lOoC increase in temperature. To date, few actual test results have been published to equate the magnitude of AC ripple with the resulting temperature rise and actual impact on service life. In this paper, we present actual VRLA product responses to AC ripple and discuss the potential impacts on life.