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Can the SLA Battery Compete in Modern Times?
Two types of sealed Lead-acid batteries have emerged: the sealed Lead-acid (Gelcell) and the Valve Regulated (VRLA). This article focuses on the sealed type. Its benefits include low self discharge, of about 10% per year, and low cost. Its shortcomings include a relatively short cycle life of 200-300 cycles. Its proper charging algorithm should have a constant current first stage, a constant Voltage topping charge and a float charge to compensate for self discharge.(03-02 BD72-12)

The Battery Man
January 2002, pp. 38-41

 

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