Portable

Vent plugs Cell pillars and connectors Cell lid Negative plates (pasted grids) Separators (sintered microporous PVC) Planté positive plates (constructed of pure lead) Plastic container (transparent styrene acrylonitrile) Lead-Acid Storage Batteries DOE-HDBK-1084-95 APPLICATIONS Rev. 0 Page 25 Batteries times of low power demand. Stationary batteries are also used for backup emergency power, telecommunications equipment, and uninterruptible power supplies. Stationary batteries are manufactured in a variety of plate designs. An example of a stationary battery used for backup power is shown in Figure 13. Portable Portable lead-acid batteries are usually of the sealed type constructed similarly to that depicted in Figure 14. Their operation cannot usually be described as cyclic or float, but is somewhere in-between. Batteries in this category may be frequently deep cycled or remain unused for a relatively long time. Typical applications are portable tools, toys, lighting and emergency lighting, radio equipment, and alarm systems. Most portable batteries may be recharged to 80–90% of their original capacity in less than an hour using a constant-voltage charger. Figure 13. Typical stationary battery used for backup power.