7
• Equalize Battery Charge
(DIP Switch #3, Group B)
This DIP Switch is momentarily engaged to begin the process of equalizing the internal resistance
of your battery’s cells. This can extend the useful life of certain types of batteries; consult with
your battery's manufacturer to determine if your batteries could benefit from this process. The
charge equalization process is automatic and once started can only be stopped by removing the
input power.
• Move to “Equalize” (DOWN) position for three seconds.
• Move to “Reset” (UP) position and leave it there.
Battery Charge
Switch Position
Reset Up*
Equalize Down
* Factory default setting.
• Limit Battery Charger
(DIP Switch #4, Group B) (APSINT1524 only)
To prevent overheating smaller batteries, the charger on this UPS system is initially set to deliver only
a fraction of its maximum power rating to connected batteries. If you are using this system with a
larger (over 100 amp-hours) battery or battery system, you may switch your battery charger to full
power without overheating your batteries.
Battery Charger
Switch Position
Partial (1/3) Charging Power
Up*
Full Charging Power
Down
* Factory default setting.
Configuration
continued
Setting Procedure
CAUTION: Battery charge equalization should only be performed in
strict accordance with the battery manufacturer’s instructions and
specifications.
CAUTION: Do not leave DIP switch #3 in the down position after
beginning process.
4 3 2 1
Reset*
Equalize
4 3 2 1
Partial*
Full
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