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16 PS500B/PS800B
6.USER REPLACEABLE BATTERY
The Batteries inside this UPS should last from between 3 to 5 years. If you
suspect that the batteries are weak, allow the UPS to charge the batteries for
at least six hours and then test the backup time. If the UPS still does not
provide adequate backup time, follow the procedures below to replace the
batteries. Please read section 6.1 before performing the procedure in sections
6.2.
6.1 WARNING
Servicing of batteries should always be performed or supervised by
personnel knowledgeable of batteries and required precautions. Please
read the following cautions before replacing the batteries. Keep
unknowledgeable (i.e., unauthorized) personnel away from the batteries.
CAUTION: Except for the battery, the unit contains no user serviceable parts.
Repairs should be performed only by factory trained service personnel.
CAUTION: A battery can present a risk of electrical shock and high short-
circuit current. The following precautions should be observed when working on
batteries:
(1) Remove watches, rings, or other metal objects.
(2) Use tools with insulated handles.
CAUTION: Do not dispose of batteries in a fire. The batteries may explode.
CAUTION: Do not open or mutilate batteries. They contain an electrolyte
which is toxic and harmful to the skin and eyes.
CAUTION: When replacing batteries, use the same number and the
following type batteries: sealed Lead-Acid Maintenance Free (PS500B:
4.5AH/12V x2) (PS800B: 5AH/12V x2)