The Xtreme Power Conversion P91-5K (paired with the BPXR2U240A battery pack) and the Eaton 9PX5KG2 are true online, double-conversion UPS systems designed for mission-critical IT and infrastructure loads. Both deliver full 5kVA / 5kW (unity power factor) output and enterprise-grade power protection.
However, the P91-5K configuration shown here differentiates itself with longer baseline runtime, modular bypass and distribution options, and built-in TAA compliance, while the Eaton 9PX5KG2 emphasizes a compact, integrated chassis with shorter internal runtime.
5kVA / 208–240V Online UPS Comparison
| Feature | XTREME POWER P91-5K + BPXR2U240A | Eaton 9PX5KG2 | XPCC Advantage |
| UPS Capacity | 5kVA / 5kW | 5kVA / 5kW | Equivalent usable power |
| Topology | Online Double Conversion | Online Double Conversion | Equivalent premium protection |
| System Runtime (Full Load) | ~7 minutes (with BPXR2U240A) | ~3 minutes | Longer baseline runtime |
| Optional External Battery Packs | Yes (BPXR 2U or 3U) | Yes | Both scale runtime |
| Input / Output Architecture | Hardwired or optional XBDM modular bypass & distribution | Hardwired or L6-30P; fixed receptacle set | Greater flexibility and serviceability |
| Rack Height / Configuration | 4U total (2U UPS + 2U battery) | 3U total | Trades space for longer runtime |
| Form Factor | Rack / Tower | Rack / Tower | Equivalent mounting flexibility |
| Warranty | 3 years electronics 3 years batteries |
3-year limited warranty | Comparable coverage |
| Compliance / Listings | UL1778, cUL, FCC, CE, RoHS, TAA | UL1778, cULus, IEC 62040-2, RoHS | P91 adds TAA compliance |
| TAA Compliance | Yes | No | Key differentiator for federal procurement |
Where the P91-5K Excels
- Federally funded and TAA-restricted procurement environments
- Installations requiring longer baseline runtime without large external cabinets
- Deployments benefiting from modular bypass and power distribution (XBDM)
- Infrastructure racks prioritizing serviceability and lifecycle flexibility
- Projects where runtime scalability outweighs minimal rack height
When Eaton 9PX5KG2 May Be a Fit
- Existing Eaton-standardized environments
- Deployments prioritizing a compact, integrated UPS chassis
- Installations where shorter internal runtime is acceptable
- Non-TAA-regulated commercial projects
Who Should Choose Which
Choose Xtreme Power Conversion P91-5K if you need:
- Longer baseline runtime at full 5kW load
- Modular bypass and distribution for easier service and expansion
- Built-in TAA compliance for government, education, and public-sector projects
- Flexible runtime scaling using BPXR battery options
- Greater architectural flexibility for infrastructure-class deployments
Choose Eaton 9PX5KG2 if you need:
- A more compact 5kVA UPS with integrated design
- Alignment with an existing Eaton UPS ecosystem
- Deployment in non-regulated environments with modest runtime needs
Ideal Applications
- Data center edge and infrastructure racks
- Network and telecom rooms
- Government, education, and public-sector facilities
- Industrial and critical IT environments
- Projects requiring scalable runtime and service flexibility
Download the Printable Comparison
Download the Xtreme P91-5K – Eaton 9PX5KG2 Comparison PDF
https://xpcc.com/wp-content/uploads/Xtreme-P91-5K-Eaton-9PX5KG2-Comparison.pdf
(Ideal for specification reviews, project planning, and internal approvals)
Plan with Confidence
Request a Quote
Speak with an Xtreme Power Conversion specialist to size the right P91-5K configuration and runtime architecture for your application.
Xtreme Power Conversion
Phone: (800) 582-4524
Email: sales@xpcc.com