P91-1.5kLi 1500VA/1350W Online Lithium-Ion UPS, 2U Rack/Tower, 120V

P91-1.5kLi is a 1500VA/1350W, 120V online double-conversion lithium UPS in a 2U rack/tower chassis, from the Xtreme Power Conversion P91 Li series.
Specifications
Model: P91-1.5kLi (Xtreme Power Conversion P91 Li series)
Capacity: 1500VA / 1350W
Topology: online double conversion; pure sine wave output; zero transfer time
Efficiency: up to 98% in ECO mode, 94% online
Input: 55-150V (load dependent), 50/60 Hz; 6 ft 5-15P cord
Outlets: (8) NEMA 5-15R; programmable outlet group
Battery: lithium iron phosphate (LiFePO4), 15S2P of LFP26650 2600mAh cells; hot-swappable internal pack with BMS; about 1.5 hours to 90% recharge
External batteries: not offered on this series (internal battery only)
Form factor: 2U rack, tower or wall, 17.2 x 15.1 x 3.4 in
Operating temperature: 0-50 °C (32-122 °F), derated above 40 °C
Communications: RS-232, USB, EPO, slot for optional Web/SNMP, relay or Modbus card
Published runtime: about 8 minutes at 1350W; about 22 minutes at 540W
Application notes
The P91-1.5kLi is meant for distributed IT, network and AV racks where sending a technician to swap batteries is the real cost. LiFePO4 is rated by Xtreme for up to 15 years and handles warm closets better than lead acid. It is built for ride-through and controlled shutdown; choose the lead-acid P91 with external packs when long runtime matters more.
Manufacturer warranty: 6 years electronics, 6 years battery (USA and Canada); 2 years where ambient runs 40-50 °C (104-122 °F), as published.
Source: Xtreme Power Conversion published datasheets and product pages. Runtimes are manufacturer estimates and vary with battery age, temperature and load.
Helpful guides: How to Size a UPS · When to Replace a UPS Battery · Common UPS Failure Points and Preventive Maintenance · UPS and battery service
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