P91g-3kLi vs Eaton 9PX3000GRT-L
The Xtreme Power P91g-3kLi and Eaton 9PX3000GRT-L are 208/230 V online double-conversion lithium rack UPS for IT, network, AV, and edge deployments, both on LiFePO₄ batteries in a 2U chassis. With equal 2700 W capacity and efficiency, the P91g-3kLi differentiates on longer runtime at higher load, much faster recharge, longer battery calendar life, TAA compliance, and a longer warranty.
What the P91g-3kLi brings
- Longer runtime at higher usable load (11 min at 2700 W vs 10 min at 2400 W)
- Much faster recharge (1.5 hr vs 3 hr)
- Up to 15-year LiFePO₄ battery life
- TAA-compliant lithium UPS
- Longer full-system warranty (6 vs 5 yr)
Side-by-side specifications
| Specification | Xtreme Power P91g-3kLi | Eaton 9PX3000GRT-L | Advantage |
|---|---|---|---|
| Battery chemistry | Lithium iron phosphate (LiFePO₄) | Lithium iron phosphate (LiFePO₄) | Equal chemistry |
| Capacity | 3000 VA / 2700 W | 3000 VA / 2700 W | Equal usable power |
| Topology | Online double conversion | Online double conversion | Equivalent protection |
| Runtime (internal) | 11 min at 2700 W | 10 min at 2400 W | P91g – longer runtime at higher load |
| Recharge time | 1.5 hr to 90% | 3 hr | P91g – faster recharge |
| Battery calendar life | Up to 15 years | 8–10 years | P91g – longer calendar life |
| Efficiency (online) | Up to 94% | Up to 94% | Equal efficiency |
| Form factor | 2U rack (23.8 in depth) | 2U rack (23.8 in depth) | Similar footprint |
| TAA compliance | Yes | No | P91g – federal eligible |
| Warranty | 6-year UPS + battery | 5-year lithium | P91g – longer coverage (6 vs 5 yr) |
Specifications from Xtreme Power’s P91g-3kLi vs Eaton 9PX3000GRT-L comparison; confirm against current vendor documentation. Eaton internal runtime is quoted at 2400 W.
Choosing between them
With equal capacity, efficiency, and footprint, the P91g-3kLi leads on runtime, recharge, battery calendar life, TAA, and warranty; the 9PX3000GRT-L fits Eaton-standardized service ecosystems.
Choose the P91g-3kLi if you need
- Up to 15-year lithium battery life
- Faster recharge recovery
- Longer runtime at rated load
- TAA-compliant lithium UPS
- Extended full-system warranty
The Eaton 9PX3000GRT-L may fit if you need
- Alignment with existing Eaton infrastructure
- Consistency with existing Eaton lithium UPS
- An installed Eaton service relationship
Frequently asked questions
The Xtreme Power P91g-3kLi is a common alternative, a 208/230 V online LiFePO4 rack UPS that matches the 2700 W capacity while adding longer runtime, faster recharge, longer battery calendar life, and TAA compliance.
Capacity, topology, efficiency, and footprint are equivalent. The P91g-3kLi separates on usable runtime (11 min at 2700 W vs 10 min at 2400 W), recharge (1.5 hr vs about 3 hr), battery calendar life (up to 15 years vs 8 to 10), warranty (6 vs 5 years), and TAA eligibility.
Faster recharge restores full backup capacity sooner after an outage, which matters where outages cluster or a second event can follow the first. The P91g-3kLi reaches 90% in about 1.5 hours.
Yes. The P91g-3kLi is TAA compliant for U.S. federal and public-sector procurement; the competitor unit is not TAA listed.
Related comparisons
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