30kVA Online Double-Conversion UPS Comparison for Three-Phase Critical Loads
The Xtreme Power Li90 and the Eaton 9355 from Eaton are both high-performance, online double-conversion UPS systems designed to protect mission-critical three-phase loads in data centers, industrial facilities, healthcare environments, and infrastructure applications.
While both platforms provide continuous clean power and integrated maintenance bypass, key differences emerge in usable power output, battery technology, efficiency and heat dissipation, physical footprint, runtime, operating temperature, and long-term lifecycle cost.
For environments where power density, thermal performance, and reduced maintenance matter, the Li90 delivers clear next-generation advantages.
Learn more about the Xtreme Power Li90
https://xpcc.com/products/li90/
Key Differentiators at a Glance
- Full 30kW usable power (unity power factor)
- Lithium iron phosphate (LiFePO₄) battery technology
- Higher online efficiency with significantly lower heat output
- Much smaller and lighter footprint
- Longer internal runtime at full load
- Operation up to 50 °C (122 °F)
- Longer battery and system warranty coverage
- Lower installation, maintenance, and lifecycle costs
30kVA 208/120V Three-Phase UPS Feature Comparison
| Feature | Xtreme Power Li90 (30kVA) | Eaton 9355 (30kVA) | Li90 Advantage |
| Rated Capacity | 30kVA / 30kW | 30kVA / 27kW | Full usable power (unity PF) |
| UPS Topology | Online Double Conversion | Online Double Conversion | Equal protection |
| Battery Technology | Lithium Iron Phosphate (LiFePO₄) | VRLA (Lead-Acid) | 5× longer life, smaller & lighter |
| Online Efficiency / Heat Output | ~94.5% / ~5,954 BTU/hr | ~91% / ~9,220 BTU/hr | Lower cooling requirements |
| Internal Battery Runtime | ~15 minutes @ 30kW | ~11 minutes @ 27kW | Longer runtime at full load |
| Battery Life Expectancy | Up to 15 years or 3,000–5,000 cycles | ~3–5 years or ~300 cycles | Dramatically fewer replacements |
| Maintenance Bypass | Integrated (standard) | Integrated (standard) | Equal serviceability |
| Operating Temperature | Up to 50 °C (122 °F) | Up to 40 °C (104 °F) | Better for hot environments |
| Physical Size / Weight | 12.6 × 35.2 × 49.2 in / ~483 lb | 20 × 34 × 66 in / ~1,160 lb | Much smaller and lighter |
| Battery Warranty | 5 years (LiFePO₄) | 2 years (VRLA) | More than 2× coverage |
| Start-Up & System Warranty | Start-up included; 2-year warranty (US & Canada) | Start-up included; 1-year parts / 90-day labor | Longer standard coverage |
Where the Li90 Excels
- High-density 30kVA three-phase deployments
- Applications requiring full usable kW output
- Electrical rooms with limited cooling or elevated ambient temperatures
- Sites seeking lower heat output and reduced HVAC load
- Facilities aiming to reduce battery replacement and service events
- Long-term installations focused on lower total cost of ownership
When the Eaton 9355 May Be a Fit
- Traditional data center environments with ample space and cooling
- Sites standardized on Eaton 9355 platforms
- Installations planning external battery cabinets and routine VRLA replacement
Who Should Choose Which?
Choose Xtreme Power Li90 if you need:
- Full 30kW usable power in a 30kVA system
- Lithium UPS technology with long service life
- Higher efficiency and lower thermal output
- A smaller, lighter three-phase UPS footprint
- Operation up to 50 °C
- Longer battery and system warranty coverage
Choose Eaton 9355 if you need:
- A traditional VRLA-based online UPS
- Alignment with existing Eaton 9355 deployments
- Standard operating conditions with controlled cooling
Download the Printable Comparison
Download the Xtreme Power Li90 vs Eaton 9355 (30kVA) Comparison PDF
https://xpcc.com/wp-content/uploads/Xtreme-Li90-Eaton-9355-30K-Comparison.pdf
(Ideal for specification reviews, project planning, and internal approvals)
Compare Li90 to Other UPS Alternatives
Evaluating lithium and VRLA UPS platforms for critical infrastructure?
View all Xtreme Power UPS comparisons
https://xpcc.com/ups-comparisons/
Plan with Confidence
Xtreme Power Conversion supports early specification, design-in, and lifecycle planning for data centers, industrial facilities, healthcare, and regulated environments.
(800) 582-4524
sales@xpcc.com