Rackmount Solutions XRT Series - Manual (Page 27)

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5. SYSTEM BATTERIES
The batteries used in the XRT series of UPS’s and the XRTBP battery
packs are sealed, maintenance-free, lead-acid batteries, with the
electrolyte completely absorbed in the plates and separator material. For
maximum battery life, battery temperature should be kept as cool as
practical indoors. Expected average battery life is 5 years. The XRT units
monitor the condition of the batteries and indicate when the batteries are
low. If, after charging for an appropriate time, (according to the number of
battery packs on the system) and the batteries are still low, this indicates
the batteries should be replaced. Replacement batteries and battery
packs are available from Minuteman or your local distributor or dealer.
When batteries are replaced, dispose of the batteries according to local
regulations or return the batteries to your dealer or distributor for proper
disposal. If you cannot dispose of the old batteries, they may be returned
to Minuteman for proper disposal. Call Minuteman Technical Support for
instructions on returning the batteries.
NOTE: Only the XRTBP battery packs are to be used with the XRT
units. The XRT UPS has the DC battery negative terminal tied to the
AC ground at the remote communications port. Other battery
systems may have the DC battery positive terminal tied to AC
ground. This would result in a direct short and may damage the
unit and void your warranty.
STORAGE INSTRUCTIONS
If the UPS is to be stored, allow the batteries to fully charge for 24 hours,
then store the unit in a cool, dry location. For extended storage in
moderate climates, the batteries should be charged for 8 hours every 3
months. Repeat this operation every 2 months in high temperature
locations.