LEAD-ACID BATTERY TYPESDOE-HDBK-1084-95Lead-Acid Storage BatteriesBatteriesPage 12Rev. 0 Sealed type batteries are often avoided for backup power source applications for severalreasons. One reason is that the state of charge of sealed type batteries cannot be ascertainedby the usual specific gravity measurement. Reliable alternative methods to measure the stateof charge for sealed type batteries are under development. A second reason is theirsensitivity to high temperatures.
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