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VRLA batteries achieve low-maintenance operation through oxygen recombination. This article explains the internal structure, the gas recombination process and the role of the safety valve.
The usable capacity of a battery differs with discharge rate. This article explains the meaning of the 10-hour and 20-hour rates, their relationship and how to use them when sizing.
Selecting a UPS backup battery requires fixing the voltage level, backup time, discharge rate and ambient temperature. This article sets out the order of calculation and common pitfalls.
