The Xtreme Power Conversion P91-1500 and APC Smart-UPS SRT1500XLA are true online, double-conversion UPS systems designed to protect mission-critical IT, network, and edge infrastructure. Both deliver continuous sine-wave output and enterprise-grade protection from power disturbances.
However, the P91-1500 differentiates itself with higher usable output power, a shallower rack footprint, longer battery design life, and full TAA compliance, making it better suited for space-constrained deployments and federally regulated procurement environments.
1500VA / 120V Rack-Mount Online UPS Comparison
| Feature | XTREME POWER P91-1500 | APC Smart-UPS SRT1500XLA | XPCC Advantage |
| UPS Capacity | 1500VA / 1450W | 1500VA / 1350W | Higher usable watt capacity supports more real-world load |
| Topology | Online Double Conversion | Online Double Conversion | Equivalent enterprise-grade protection |
| UPS Depth | 16.1 in | 20.0 in | Shallower design fits shallow racks and improves rear cable clearance |
| Display | LCD | LCD | Equivalent local monitoring |
| Input / Output Connections | 5-15P input (8) NEMA 5-15R outlets |
5-15P input (6) NEMA 5-15R outlets |
Two additional outlets support more connected equipment |
| Monitoring Software | Standard | Standard | Equivalent monitoring capability |
| Battery Design Life | 3–5 years | 2 years | Fewer battery replacements over system life |
| Warranty | 3 years electronics 3 years batteries |
3 years electronics 2 years batteries |
Longer battery coverage reduces lifecycle risk |
| TAA Compliance | Yes (Manufactured in Taiwan) | No | Eligible for U.S. federal and regulated procurements |
Where the P91-1500 Excels
- Edge, IDF, and MDF deployments with limited rack depth
- Federally funded and TAA-restricted procurement environments
- Installations requiring more built-in receptacles without external PDUs
- Projects prioritizing longer battery life and lower lifecycle cost
- Space-constrained racks where rear cable clearance matters
When APC Smart-UPS SRT1500XLA May Be a Fit
- Existing APC-standardized environments
- Deployments prioritizing consistency with APC management tools
- Climate-controlled IT rooms with standard rack depth
- Projects where TAA compliance is not required
Who Should Choose Which
Choose Xtreme Power Conversion P91-1500 if you need:
- Higher usable watt output from a 1500VA UPS
- A shallower rack-mount design for space-limited installations
- Longer battery design life and extended battery warranty
- Eight built-in outlets without adding external PDUs
- Full TAA compliance for government, education, and public-sector projects
Choose APC Smart-UPS SRT1500XLA if you need:
- Alignment with an APC-standardized infrastructure
- Familiarity with APC management and service ecosystems
- Deployment in well-cooled, full-depth rack environments
Ideal Applications
- IT and network racks
- Edge computing and micro data centers
- IDF and MDF closets
- Government, education, and public-sector installations
- Space-constrained rack environments
Download the Printable Comparison
Download the Xtreme P91-1500 – APC Smart-UPS SRT1500XLA Comparison PDF
https://xpcc.com/xtreme-p91-1500-apc-smart-ups-srt1500xla-comparison/
(Ideal for specification reviews, project planning, and internal approvals)
Plan with Confidence
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Speak with an Xtreme Power Conversion specialist to size the right UPS and battery configuration for your application.
Xtreme Power Conversion
Phone: (800) 582-4524
Email: sales@xpcc.com