About this UPS accessory
Xtreme Power P91-BP36 external battery pack
The P91-BP36 is an external battery pack for P91/P91g 1.5 kVA models. It adds battery capacity to a supported UPS and is not a stand-alone UPS.
- Nominal pack voltage: 36 V
- Battery configuration: six 12 V 9 Ah lead-acid batteries
- Form factor: 2U rack
- Compatibility must follow the named XPC UPS models
Technical specifications
Compatibility, installation, and ordering details
Exact model matching
We confirm compatibility against the exact model number on your UPS, not a similar-sounding name.
Technical specifications
Use the product specifications and manufacturer documentation to confirm electrical, connector, and installation requirements.
Installation support
Contact us before ordering if the UPS model, rack configuration, connector, or regional suffix is uncertain.
Canadian fulfilment
Orders are fulfilled in Canada. Availability and lead time are shown separately from compatibility.
1 UPS model awaiting confirmation
We have not confirmed this UPS model yet. Contact us before ordering.
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P91-1500Needs confirmation
Showing 1 UPS model awaiting confirmation.
Before you order
How do I confirm this accessory fits my UPS?
Match the complete UPS model number and regional suffix to a confirmed UPS model in the list above. If the model is marked Needs confirmation, contact us before ordering.
Does compatibility mean the item is in stock?
No. Compatibility and availability are separate. The linked UPS status and the accessory's own product page provide current ordering information.
What installation details should I check?
Confirm the exact UPS model, voltage, connector or communication interface, rack or mounting requirements, quantity limits, and any required cables or dependencies.