UPS MAINTENANCEEATON Powerware® 9125 Two-in-One UPS (700–2000 VA) User’s Guide S 164201514 Rev B www.powerware.com48When to Replace BatteriesWhen the indicator flashes, the batteries may need replacing.Conduct a self-test by pressing and holding the button for threeseconds. After the test is complete, the indicator should turn off (itmay take a few seconds to turn off). If the indicator continues toflash, contact your service representative to order new batteries.Replacing BatteriesNOTE DO NOT DISCONNECT the batteries while the UPS is in Battery mode.With the hot-swappable battery feature, UPS batteries can be replacedeasily without turning the UPS off or disconnecting the load.If you prefer to remove input power to change the batteries, see“Turning the UPS Off” on page 32.Consider all warnings, cautions, and notes before replacing batteries.W A R N I N GS Batteries can present a risk of electrical shock or burn from high short-circuit current. Thefollowing precautions should be observed: 1) Remove watches, rings, or other metalobjects; 2) Use tools with insulated handles; 3) Do not lay tools or metal parts on top ofbatteries.S ELECTRIC ENERGY HAZARD. Do not attempt to alter any battery wiring or connectors.Attempting to alter wiring can cause injury.