CyberPower ST625U
A small standby UPS that suits one desktop PC without a gaming graphics card, or a home network closet.
Amazon $79.95$79.95
The CyberPower ST625U rates 2.8 among desktop (under 1,000 VA) UPS battery backups; the APC Smart-UPS SCL500RM1UC rates 2.8 among rackmount and online ones. The CyberPower ST625U costs $391.04 less ($79.95 vs $470.99).
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.
APC Smart-UPS SCL500RM1UC
A 1U lithium UPS for a network rack where height and battery life matter more than output.
Amazon $470.99$470.99
Scores side by side
These two sit in different size classes (desktop (under 1,000 VA) and rackmount and online), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | CyberPower ST625U | APC Smart-UPS SCL500RM1UC |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 25% | 81 $22.21 per 100 W ($79.95, 360 W) | 1 $117.75 per 100 W ($470.99, 400 W) |
| Output 15% | 7 360 W rated output | 10 400 W rated output |
| Topology and waveform 20% | 0 standby, simulated sine wave | 75 topology not published, sine wave |
| Runtime 10% | 50 runtime at 100 W not published (neutral score used) | 50 runtime at 100 W not published (neutral score used) |
| Features 15% | 35 USB charging, software or network management | 40 software or network management, lithium battery |
| Warranty 15% | 44 3-year warranty, $100,000 equipment guarantee | 70 5-year warranty, no equipment guarantee published |
Specifications
| CyberPower ST625U | APC Smart-UPS SCL500RM1UC | |
|---|---|---|
| Power | ||
| Rated apparent power | 625 VA | 500 VA |
| Rated real power | 360 W | 400 W |
| Topology | Standby | - |
| Battery waveform | Simulated sine | Sine wave |
| Automatic voltage regulation | No | - |
| Battery and runtime | ||
| Battery type | - | Lithium |
| Outlets and features | ||
| Outlets | 8 (4 on battery) | 4 (all on battery) |
| Format | Desktop | Rackmount |
| Display | LED indicators | LED indicators |
| USB charging ports | Yes | No |
| Data port, software or network option | Yes | Yes |
| Warranty | ||
| Warranty | 3 years | 5 years |
| Connected-equipment guarantee | $100,000 | - |