Liquid-cooled energy storage lead-acid battery is the most durable
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The end-of-charge voltage for a single cell is close to 2.4 V and for most battery types it is more precisely 2.37 V. The most common lead–acid battery configuration on the market, the 12-V battery comprising six single cells in series, is charged with about 14.4 V and reads about 12.6 V when fully charged (in steady state, i.e., no load).