
Xtreme Power Conversion Corporation
P91c-1000 User’s Manual
Page 11
Uninterruptible Power Supply
Storage and Maintenance
Operation
The UPS system contains no user-serviceable parts. If the battery service life (3~5 years
at 25°C ambient temperature) has been exceeded, the batteries must be replaced. In this
case, please contact your dealer.
Storage
Before storing, charge the UPS 5 hours. Store the UPS covered and upright in a cool, dry
location. During storage, recharge the battery in accordance with the following table:
Model
Storage Temperature
Recharge Frequency
Charging Duration
P91c-1000
-25°C -50°C
Every 3 months
1-2 hours
50°C -55°C
Every 2 months
1-2 hours