PowerWalker VFI 10000TCP 3_1 - Manual (Page 59)

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8. Battery Maintenance, Replacement and
Disposal
8.1 Maintenance
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This series UPS only requires minimal maintenance. The battery
used for standard models are value regulated sealed lead-acid
maintenance free battery. These models require minimal repairs.
The only requirement is to charge the UPS regularly in order to
maximize the expected life of the battery. When being connected
to the utility power, whether the UPS is turned on or not, the UPS
keeps charging the batteries and also offers the protective
function of overcharging and over-discharging.
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The UPS should be charged once every 4 to 6 months if it has not
been used for a long time.
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In the regions of hot climates, the battery should be charged and
discharged every 2 months. The standard charging time should
be at least 12 hours.
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Under normal conditions, the battery life lasts 3 to 5 years. In
case if the battery is found not in good condition, earlier
replacement should be made. Battery replacement should be
performed by qualified personnel.
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Replace batteries with the same number and same type of
batteries.
■
Do not replace the battery individually. All the batteries should be
replaced at the same time following the instructions of the battery
supplier.
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Normally, the batteries should be charged and discharged once
every 4 to 6 months. Charging should begin after the UPS shuts
down automatically in the course of discharging, the standard
charging time for the standard UPS should be at least 12 hours.