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Chapter 10 UPS maintenance
Manually replacing any battery packs
Attention! Once batteries are replaced, it is important to run a charge cycle of 48 hours to ensure the
capacity and runtime is synchronized. Two battery tests are performed during that portion
of the ABM cycle, three measurements are performed and will ensure there are no bad
cells in the battery string.
The battery algorithm needs a known starting point for ABM functionality, battery test and
the estimated runtime to be reasonable. Charging the batteries for 48 hours ensures those
functions are set correctly and advised for any start-up to ensure the batteries are good
and the timers are setup correctly.
Run a manual battery test and then let the batteries charge for 48 hours. See
Display functions
manually start a battery test.
During the 48 hour charge cycle the UPS is not to protect any load!
The Lenovo 8 kVA and 11 kVA UPS units (single and three phase) are shipped with a power
module to which a battery module is attached to. The battery replacement procedure for this base
UPS is identical to the battery replacement procedure for an Extended Battery Module. This
battery module is listed as 0 in the
batteries to be
Lenovo 8 kVA or 11 kVA UPS, single or three phase
122
under
Control
ordered.
/
Start battery test
table that allows to determine the number of replacement
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
for additional information on how to
Chapter 3
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