P91-1.5kLi vs Eaton 9PX1500RT-L
The P91-1.5kLi and Eaton 9PX1500RT-L are both 1.5 kVA online double-conversion UPS on lithium iron phosphate batteries with equal real power. The P91-1.5kLi is engineered for higher-temperature operation, faster recharge, longer service life, and federal procurement eligibility.
What the P91-1.5kLi brings
- Operation up to 50 °C vs 40 °C
- Nearly double battery service life (up to 15 yr)
- Faster recharge (1.5 h vs 3 h to 90%)
- TAA compliance for government procurement
- 6-year vs 5-year warranty
Side-by-side specifications
| Specification | Xtreme Power P91-1.5kLi | Eaton 9PX1500RT-L | Advantage |
|---|---|---|---|
| Battery chemistry | LiFePO₄ | LiFePO₄ | Comparable chemistry |
| Capacity | 1500 VA / 1350 W | 1500 VA / 1350 W | Equal real power |
| Topology | Online double-conversion | Online double-conversion | Equivalent protection |
| High-temperature operation | Up to 50°C, derates above 40°C | Up to 40°C | P91 – hot environments |
| Battery life | Up to 15 yr / 3,000–5,000 cycles | 8–10 years | P91 – nearly double service life |
| Recharge | 1.5 h to 90% | 3 h to 90% | P91 – faster recovery |
| Runtime (full load) | 11 min | 11 min | Comparable runtime |
| Form factor | Rack / tower | Rack / tower | Equivalent |
| TAA compliance | Yes | No | P91 – federal procurement |
| Warranty | 6-year UPS & battery | 5-year UPS & battery | P91 – longer coverage |
Specifications from Xtreme Power’s supplied P91-1.5kLi vs Eaton 9PX1500RT-L comparison; confirm against current vendor documentation. Both are online double-conversion LiFePO4 platforms.
Choosing between them
Closely matched online lithium units – equal power, topology, chemistry, and full-load runtime. The P91-1.5kLi differentiates on temperature, recharge speed, service life, TAA, and warranty.
Choose the P91-1.5kLi if you need
- Edge / distributed IT with elevated temperatures
- Fast battery recovery after outages
- Long-life installations focused on TCO
- Government / public-sector projects requiring TAA
The 9PX1500RT-L may fit if you need
- Commercial IT standardized on Eaton platforms
- Climate-controlled rooms with predictable maintenance
- Platform consistency over lifecycle value
Related comparisons
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