APC UPS, ENERGY STAR certified
APC Back-UPS 350VA X545 120V
350 VA / 210 W passive standby UPS, model number BK350X545.
Capacity
350 VA
210 W real power
Topology
Passive Standby
Efficiency
98.0%
weighted, as tested
Runtime @ 50%
20 min
5 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 350 VA and 210 W, so the equipment plugged into its battery outlets should draw no more than about 168 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 98.0% compares with a median of 97.9% across 16 certified units within 25% of its capacity. With nothing plugged in it still draws 2.2 W, about $2.54 a year at 13¢/kWh just to stand ready.
- Maker
- APC
- Model
- APC Back-UPS 350VA X545 120V
- Model number
- BK350X545
- Apparent power rating
- 350 VA
- Real power rating
- 210 W
- Power factor
- 0.60
- Topology
- Passive Standby
- Intended use
- Consumer
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 20 min
- Runtime at 100% load
- 5 min
- Battery warranty
- 3 yr
- Weighted efficiency
- 98.0%
- Efficiency at 25 / 50 / 75 / 100% load
- 96.1% / 98.0% / 98.6% / 98.8%
- Input power at no load
- 2.2 W
- Outlets
- 6 (3 battery + surge, 3 surge only)
- Rack mountable
- No
- Rated input voltage
- 120 V
- Rated output voltage
- 120 V
- Connections
- USB Port
- Size (H x W x D)
- 165 x 91 x 284 mm
- Maker take-back program
- Yes
- On the market since
- Apr 2008
- ENERGY STAR certified
- 12 Feb 2019
Certified under the same record
The maker lists these as the same machine or a variant of it: APC Back-UPS 350VA X545 120V Factory Serviced, BK350X545W, Std Exch APC Back-UPS 350VA X545 120V, BK350X545Q.
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2333439, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the APC Back-UPS 350VA X545 120V
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| CyberPower CP350COM | 350 VA / 255 W | Passive Standby | 97.9% | 8 min |
| CyberPower CP350SLG | 350 VA / 255 W | Passive Standby | 97.9% | 8 min |
| Tripp Lite AG-0306 | 350 VA / 210 W | Passive Standby | 98.7% | 7 min |
| W Box 0E-350V6 | 350 VA / 255 W | Passive Standby | 97.9% | 8 min |
| Vertiv PST5-350MT120 | 350 VA / 200 W | Passive Standby | 97.6% | 11 min |
| Tripp Lite AG-0305 | 350 VA / 210 W | Passive Standby | 98.7% | 7 min |
APC
More APC UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| APC Back-UPS 350 | 350 VA / 210 W | Passive Standby | 98.0% | 20 min |
| APC Back-UPS 400VA 120V Slim Flexible Mounting | 400 VA / 220 W | Passive Standby | 98.5% | 20 min |
| APC Back-UPS 500 (beige) | 500 VA / 300 W | Passive Standby | 98.6% | 15 min |
| APC Back-UPS 500 (black) | 500 VA / 300 W | Passive Standby | 98.6% | 15 min |
| APC Back-UPS 650VA 120V 8 NEMA outlets (4 surge) | 650 VA / 390 W | Passive Standby | 98.8% | 12 min |
| APC Back-UPS BE550G | 550 VA / 330 W | Passive Standby | 98.6% | 13 min |
| APC Power Saving Back-UPS Pro 1500 | 1,500 VA / 865 W | Line Interactive | 98.9% | 13 min |
| APC Power-Saving Back-UPS Pro 700 | 700 VA / 420 W | Line Interactive | 98.9% | 12 min |