CyberPower OL1500RTXL2U
A rack or tower online UPS with room to add battery modules, for a server room.
Amazon $1,395.95$1,395.95
The CyberPower OL1500RTXL2U is the better UPS battery backup overall, rated 3.3 to 3.2. The CyberPower OL1500RTXL2U leads on warranty and output. The CyberPower OL1K5RM costs $216 less ($1,179.95 vs $1,395.95).
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.
$1,179.95
Which should you buy?
- Choose the CyberPower OL1500RTXL2U for warranty (3-year warranty, $400,000 equipment guarantee vs 3-year warranty, no equipment guarantee published) and output (1,350 W rated output vs 1,200 W rated output).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every rackmount and online UPS battery backup; a clear win is highlighted. How we rank explains each one.
| Factor weight | CyberPower OL1500RTXL2U | CyberPower OL1K5RM |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Value 25% | 7 $103.40 per 100 W ($1,395.95, 1,350 W) | 10 $98.33 per 100 W ($1,179.95, 1,200 W) |
| Output 15% | 71 1,350 W rated output | 61 1,200 W rated output |
| Topology and waveform 20% | 100 online double-conversion, sine wave | 100 online double-conversion, 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% | 40 LCD, software or network management | 40 LCD, software or network management |
| Warranty 15% | 62 3-year warranty, $400,000 equipment guarantee | 35 3-year warranty, no equipment guarantee published |
Specifications
| CyberPower OL1500RTXL2U | CyberPower OL1K5RM | |
|---|---|---|
| Power | ||
| Rated apparent power | 1,500 VA | 1,500 VA |
| Rated real power | 1,350 W | 1,200 W |
| Topology | Online (double-conversion) | Online (double-conversion) |
| Battery waveform | Sine wave | Sine wave |
| Outlets and features | ||
| Outlets | 8 (all on battery) | 8 |
| Format | Rackmount | Rackmount |
| Display | LCD | LCD |
| Data port, software or network option | Yes | Yes |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Connected-equipment guarantee | $400,000 | - |