$299.99
The APC BR1500MS2 rates 3.6 among tower (1,000 to 2,000 VA) UPS battery backups; the CyberPower OL1KRM rates 3.1 among rackmount and online ones. The APC BR1500MS2 costs $602.51 less ($299.99 vs $902.50).
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.
CyberPower OL1KRM
An entry online UPS for a rack of servers or storage that cannot tolerate any transfer time.
Amazon $902.50$902.50
Scores side by side
These two sit in different size classes (tower (1,000 to 2,000 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 | APC BR1500MS2 | CyberPower OL1KRM |
|---|---|---|
| Overall rating | 3.6/5 | 3.1/5 |
| Value 25% | 62 $33.33 per 100 W ($299.99, 900 W) | 9 $100.28 per 100 W ($902.50, 900 W) |
| Output 15% | 42 900 W rated output | 42 900 W rated output |
| Topology and waveform 20% | 80 line-interactive, sine wave | 100 online double-conversion, sine wave |
| Runtime 10% | 97 73 min at 100 W | 50 runtime at 100 W not published (neutral score used) |
| Features 15% | 40 automatic voltage regulation, USB charging | 40 LCD, software or network management |
| Warranty 15% | 35 3-year warranty, no equipment guarantee published | 35 3-year warranty, no equipment guarantee published |
Specifications
| APC BR1500MS2 | CyberPower OL1KRM | |
|---|---|---|
| Power | ||
| Rated apparent power | 1,500 VA | 1,000 VA |
| Rated real power | 900 W | 900 W |
| Topology | Line-interactive | Online (double-conversion) |
| Battery waveform | Sine wave | Sine wave |
| Automatic voltage regulation | Yes | - |
| Battery and runtime | ||
| User-replaceable battery | Yes | - |
| Runtime at 100 W | 73 min | - |
| Outlets and features | ||
| Outlets | 10 (6 on battery) | 8 |
| Format | Tower | Rackmount |
| Display | - | LCD |
| USB charging ports | Yes | - |
| Data port, software or network option | No | Yes |
| Warranty | ||
| Warranty | 3 years | 3 years |