S71-1500 vs Vertiv Liebert PSA5-1500MT120
The S71-1500 and Vertiv Liebert PSA5-1500MT120 are 1500 VA / 900 W line-interactive UPS systems for desktop, network, and retail protection. The S71-1500 differentiates with faster transfer and recharge, more battery-backed outlets, higher surge protection, a more compact and lighter chassis, a touch LCD, and TAA compliance.
What the S71-1500 brings
- Faster typical transfer time (4 ms vs 6 ms)
- More battery-backed outlets (6 vs 5)
- Much faster recharge (4–6 h vs 12 h)
- Shorter depth, lower height, and lighter
- Higher surge rating (465 J vs 316 J)
- Touch LCD and TAA compliance
Side-by-side specifications
| Specification | Xtreme Power S71-1500 | Vertiv Liebert PSA5-1500MT120 | Advantage |
|---|---|---|---|
| Capacity | 1500 VA / 900 W | 1500 VA / 900 W | Equal capacity |
| Topology | Line-interactive with AVR | Line-interactive with AVR | Equivalent |
| Output waveform (battery) | Simulated sine | Simulated sine | Equivalent |
| Transfer time (typical) | 4 ms | 6 ms (10 ms max) | S71 – faster transfer |
| Receptacles | (6) all battery-backed | (10) total: 5 battery + 5 surge | S71 – more battery-backed (6 vs 5) |
| Recharge | 4–6 h to 90% | 12 h to 90% | S71 – much faster recharge |
| Dimensions (W×D×H) | 5.1 × 12.6 × 7.1 in | 3.9 × 16.2 × 11.0 in | S71 – shorter depth, lower height |
| Weight | 23 lb | 26.5 lb | S71 – lighter |
| Display | Touch LCD | LCD | S71 – touch interface |
| Data-line protection | RJ45 surge suppression | RJ45 + coax | Application dependent |
| Surge protection | 465 J | 316 J | S71 – higher surge rating |
| TAA compliance | Yes | No | S71 – government procurement |
| Warranty | 3 years | 3 years | Equal |
Specifications from Xtreme Power’s S71-1500 vs Vertiv Liebert PSA5-1500MT120 comparison; confirm against current vendor documentation.
Choosing between them
The S71-1500 leads on transfer, battery-backed outlets, recharge, footprint, weight, surge rating, display, and TAA; the Vertiv offers more total outlets and added coax line protection.
Choose the S71-1500 if you need
- Faster transfer and much faster recharge
- More battery-backed outlets and higher surge rating
- A more compact, lighter chassis with touch LCD
- TAA compliance for procurement
The Liebert PSA5-1500MT120 may fit if you need
- More total outlets (10) with coax line protection
- An existing Vertiv / Liebert standard
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