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All electrochemical energy storage systems can cause unsafe operating conditions when an uncontrolled current flow over an electrolyte path to ground occurs. The influences of different variables, intervening in such an event, have been explored with lead acid batteries of the VRLA/AGM type. The tests show that the ground short current ranges from 0.1 to ~50 mA and that direct line of sight through...
Forty years ago, lead-acid batteries were already the dominating electrochemical storage system. As standby batteries, they mostly were used as large central batteries of flooded cells. Although they already represented a matured system, development went on, mainly in the areas of safety aspects and reduction of maintenance expenses. An important turning point was the introduction of the valve-regulated...
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