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Old 09-05-2006
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One other point on depth of discharge. If batteries are deeply discharged, they stand a much higher chance of having the plates sulfate. The lead sulfate may recrystallize into a dense coarse-grained form which has high resistivity. This will often inhibits recharging or discharging and effectively reduces the capacity of the battery. By limiting the depth of discharge, you can help prevent plate sulfation.

BTW, the plates will also sulfate if they are exposed to air....so checking the electrolyte levels is fairly important.
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