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In this paper, an approach to extend the life of lead-acid batteries through the elimination of sulfation with “rest time” using the pulse current of a conventional DPV (Differential Pulse Voltammetry) method is discussed. A new rest time without “0” current in “saw-tooth” pattern pulses is proposed to overcome the “0” current (blackout period), which is a shortcoming of DPV. This will enable the proposed method to be used in the loaded state. In the proposed approach, ESSs (Energy Storage Systems) were discharged for 5 h twice per day for 6 months on weekdays. To observe the changes in the lifespan of the systems, for the same period, the changes in the impedances of lead-acid batteries which were being charged e without charging and discharging were measure and compared. This study is focused on determining the effectiveness of lead-acid batteries as ESSs.

An Empirical Study on the Application of Lead-Acid Batteries to ESSs and Performance Improvement Methods