Description
The Vertiv Liebert PSI5-1500MT120LI is a high-performance, line-interactive tower UPS designed to protect critical IT and network equipment with advanced lithium-ion battery technology. Delivering 1500VA / 1350W of clean, reliable power, it provides up to three times the battery life of traditional lead-acid UPS systems while reducing maintenance and total cost of ownership.
Built for edge IT, network closets, and remote installations, this compact tower UPS features a high 0.9 output power factor, pure sine wave output, and ultra-fast transfer times to ensure uninterrupted operation during power disturbances. Lithium-ion batteries recharge quickly, withstand more discharge cycles, and perform reliably in higher temperature environments.
An intuitive LCD display, programmable outlets, USB management, and optional network monitoring make the PSI5-1500MT120LI an ideal solution for modern IT environments that demand reliability, efficiency, and long-term value.
| Category | Specification |
|---|---|
| UPS Topology | Line-Interactive |
| Form Factor | Tower |
| Power Capacity | 1500VA / 1350W |
| Nominal Voltage | 120V AC |
| Output Waveform | Pure Sine Wave |
| Output Power Factor | 0.9 |
| Battery Type | Lithium-Ion (LiFePO4) |
| Battery Runtime | Approx. 7.5 minutes at full load |
| Recharge Time | Up to 90% in ~2 hours |
| Efficiency | Up to 98.5% (Line Mode) |
| Input Voltage Range | 75 – 146 VAC |
| Transfer Time | 4–6 ms (typical) |
| Outlets | NEMA 5-15R (battery-backed & programmable) |
| Programmable Outlets | Yes |
| Display | LCD with real-time status |
| Management Interfaces | USB |
| Network Management | Optional IntelliSlot Network Card |
| Audible Noise | <45 dB (line mode) |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Dimensions (W × D × H) | Approx. 6.3 × 15.6 × 8.7 in |
| Weight | Approx. 27.9 lb |
| Warranty | 5-Year UPS & Battery Warranty |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
