CyberPower ST425
An entry-level standby UPS for a modem, router and a small piece of home networking gear.
Amazon $59.95$59.95
The CyberPower ST425 and the Vertiv Liebert PowerUPS 100 PUL-350LVT are evenly matched, rated 2.6 and 2.6. The CyberPower ST425 leads on value. The Vertiv Liebert PowerUPS 100 PUL-350LVT wins on warranty and features. The CyberPower ST425 costs $80.04 less ($59.95 vs $139.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Vertiv Liebert PowerUPS 100 PUL-350LVT
A small lithium standby UPS for hot closets and network gear, with a 5-year warranty.
Amazon $139.99$139.99
Which should you buy?
- Choose the CyberPower ST425 for value ($23.06 per 100 W ($59.95, 260 W) vs $66.66 per 100 W ($139.99, 210 W)).
- Choose the Vertiv Liebert PowerUPS 100 PUL-350LVT for warranty (5-year warranty, no equipment guarantee published vs 3-year warranty, $75,000 equipment guarantee) and features (lithium battery vs none of the listed features).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every desktop (under 1,000 VA) UPS battery backup; a clear win is highlighted. How we rank explains each one.
| Factor weight | CyberPower ST425 | Vertiv Liebert PowerUPS 100 PUL-350LVT |
|---|---|---|
| Overall rating | 2.6/5 | 2.6/5 |
| Value 25% | 79 $23.06 per 100 W ($59.95, 260 W) | 28 $66.66 per 100 W ($139.99, 210 W) |
| Output 15% | 1 260 W rated output | 0 210 W rated output |
| Topology and waveform 20% | 0 standby, simulated sine wave | 25 standby, waveform not published |
| Runtime 10% | 50 runtime at 100 W not published (neutral score used) | 50 runtime at 100 W not published (neutral score used) |
| Features 15% | 0 none of the listed features | 20 lithium battery |
| Warranty 15% | 40 3-year warranty, $75,000 equipment guarantee | 70 5-year warranty, no equipment guarantee published |
Specifications
| CyberPower ST425 | Vertiv Liebert PowerUPS 100 PUL-350LVT | |
|---|---|---|
| Power | ||
| Rated apparent power | 425 VA | 350 VA |
| Rated real power | 260 W | 210 W |
| Topology | Standby | Standby |
| Battery waveform | Simulated sine | - |
| Automatic voltage regulation | No | No |
| Battery and runtime | ||
| Battery type | - | Lithium |
| Outlets and features | ||
| Outlets | 8 (4 on battery) | 4 |
| Format | Desktop | Desktop |
| Display | LED indicators | - |
| USB charging ports | No | - |
| Data port, software or network option | No | No |
| Warranty | ||
| Warranty | 3 years | 5 years |
| Connected-equipment guarantee | $75,000 | - |