P91-1500 vs APC Smart-UPS SRT1500XLA
The P91-1500 and APC Smart-UPS SRT1500XLA are both true online double-conversion UPS delivering continuous sine-wave output for mission-critical IT, network, and edge infrastructure. The P91-1500 differentiates with higher usable watts, a shallower rack footprint, more built-in outlets, longer battery design life, and full TAA compliance.
What the P91-1500 brings
- Higher usable watts (1450 W vs 1350 W)
- Shallower rack depth (16.1 in vs 20.0 in)
- Two more built-in outlets (8 vs 6)
- Longer battery design life (3–5 yr vs 2 yr) and warranty
- TAA compliance for federal procurement
Side-by-side specifications
| Specification | Xtreme Power P91-1500 | APC Smart-UPS SRT1500XLA | Advantage |
|---|---|---|---|
| Capacity | 1500 VA / 1450 W | 1500 VA / 1350 W | P91 – higher usable watts |
| Topology | Online double-conversion | Online double-conversion | Equivalent protection |
| UPS depth | 16.1 in | 20.0 in | P91 – shallower, fits shallow racks |
| Display | LCD | LCD | Equivalent |
| Connections | 5-15P in · (8) NEMA 5-15R | 5-15P in · (6) NEMA 5-15R | P91 – two more outlets |
| Monitoring software | Standard | Standard | Equivalent |
| Battery design life | 3–5 years | 2 years | P91 – fewer replacements |
| Warranty | 3 yr electronics / 3 yr battery | 3 yr electronics / 2 yr battery | P91 – longer battery coverage |
| TAA compliance | Yes (made in Taiwan) | No | P91 – federal procurement |
Specifications from Xtreme Power’s supplied P91-1500 vs APC SRT1500XLA comparison; confirm against current vendor documentation. Both are online double-conversion VRLA platforms.
Choosing between them
Both deliver equivalent online double-conversion protection. The P91-1500 leads on usable watts, depth, outlet count, battery life, and TAA; the APC fits APC-standardized, full-depth environments.
Choose the P91-1500 if you need
- Edge, IDF, and MDF deployments with limited rack depth
- Federally funded and TAA-restricted procurement
- More built-in outlets without external PDUs
- Longer battery life and lower lifecycle cost
The Smart-UPS SRT1500XLA may fit if you need
- Existing APC-standardized environments
- Consistency with APC management tools
- Climate-controlled, full-depth racks where TAA isn’t required
Related comparisons
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