P91-2kLi vs Vertiv Liebert GXT5Li-2000LVRT2UXL
The P91-2kLi and Vertiv Liebert GXT5Li-2000LVRT2UXL are both 2 kVA online double-conversion LiFePO₄ UPS with equal real power. The P91-2kLi adds longer service life, higher-temperature operation, faster recharge, longer internal runtime, and TAA eligibility.
What the P91-2kLi brings
- Longer internal runtime at full load (14 vs 10.5 min)
- Nearly double battery service life (up to 15 yr)
- Operation up to 50 °C vs 40 °C
- Faster recharge (1.5 h vs 2 h to 90%)
- TAA compliance and a 6-year warranty
Side-by-side specifications
| Specification | Xtreme Power P91-2kLi | Vertiv Liebert GXT5Li-2000LVRT2UXL | Advantage |
|---|---|---|---|
| Battery chemistry | LiFePO₄ with integrated BMS | LiFePO₄ with integrated BMS | Comparable technology |
| Battery life | Up to 15 yr / 3,000–5,000 cycles | 8–10 years | P91 – nearly double service life |
| Capacity | 2000 VA / 1800 W | 2000 VA / 1800 W | Equal real power |
| Topology | Online double-conversion | Online double-conversion | Equivalent protection |
| High-temperature operation | Up to 50°C, derates above 40°C | Rated to 40°C | P91 – high-heat environments |
| Recharge | 1.5 h to 90% | 2 h to 90% | P91 – faster recovery |
| Runtime (full load) | 14 min | 10.5 min | P91 – longer internal runtime |
| 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 P91-2kLi vs Vertiv GXT5Li-2000LVRT2UXL comparison; confirm against current vendor documentation. Warranty row added for consistency with the sibling Vertiv pages.
Choosing between them
Both are 2 kVA online LiFePO₄ units at equal power. The P91-2kLi leads on runtime, service life, temperature, recharge, TAA, and warranty.
Choose the P91-2kLi if you need
- Edge / distributed IT with elevated temperatures
- Longer internal battery runtime
- Fast battery recharge for availability
- Government / public-sector projects requiring TAA
The Liebert GXT5Li-2000LVRT2UXL may fit if you need
- Sites standardized on Vertiv platforms
- Climate-controlled rooms with predictable maintenance
- Comparable power with standard lithium service life
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