OPTI-UPS IS5000LR - Manual (Page 15)

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4.8 Battery charging mode: The UPS provides two charging modes for the battery, quick charging
and trickle charging. The quick charging provides higher charging current when battery is empty
and reduces the charging current when battery voltage increases. Trickle charging will begin
automatically after battery is 90% fully charged.
4.9 Green mode setting (by UPS wizard software or through LCD display)
When “Green Power” function is enabled, the UPS will turn off the power within 60 seconds after
blackout occurs with the power consumption lower than the pre-set level (adjustable from 1% to
14% of full load). The default value of green mode setting is zero (disabled). Please use the
UPS wizard software to adjust this level.
4.10 Battery capacity balance discharging
In the structure, the battery is composed with many 2VDC cells in series connection. When
UPS is installed, the batteries are charged and discharged by the same current. In theory, all
battery cells have the same charging capacity; but in fact, each cell has a small difference of
self-discharge rate in a long term, in which, the small difference of self-discharge rate will cause
big difference among all the charged batteries. This phenomenon may not only shorten the
battery life, but also cause wrong detection of "Replace battery". To prevent the wrong detection
and to keep UPS batteries in the best condition, the battery needs capacity-balance discharge
every 12 months; which is to discharge the UPS batteries to low battery alarm by disconnecting
the AC input with the UPS and use a table lamp as the load. Do not use PC as the load when
doing capacity-balance discharge to prevent from data loss at low battery shut-down. The lower
the load, the better the balancing effect.
Note : If an UPS is stored in stock, please recharge the battery set every 6 months, at least; or the
battery life will be shortened.
4.11 There are two ways to change the setting of UPS. The 1 st way is to use the UPS Wizard
software, please contact your service people for detailed information. The 2 nd way is to make it
through the LCD display, by the following procedures:
4.11.1 To push the two selection buttons, and , at the same time for 3 seconds until the LCD
display begins to blink.