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What is the difference between Antimony and Calcium alloys?

April 26, 2017alloys antimony calcium difference

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What is the difference between Antimony and Calcium alloys?

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In the past, batteries mainly relied on antimony as an alloying element for improved castability and hardness. However, the greater the concentration of antimony in the grid alloy, the greater the rate of water loss and self-discharge. The popular lead-acid battery of today is a low water loss battery. The grids of a low water loss battery (referred to as maintenance-free) contain little or no antimony. Electrical & Vision Systems are made with a calcium alloy in order to provide the necessary mechanical strength, cranking amps and life, while reducing gassing and self-discharge.