APC UPS, ENERGY STAR certified
APC Back-UPS 500 (black)
500 VA / 300 W passive standby UPS, model number BK500BLK.
Capacity
500 VA
300 W real power
Topology
Passive Standby
Efficiency
98.6%
weighted, as tested
Runtime @ 50%
15 min
3 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 500 VA and 300 W, so the equipment plugged into its battery outlets should draw no more than about 240 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 98.6% compares with a median of 98.5% across 46 certified units within 25% of its capacity. With nothing plugged in it still draws 1.9 W, about $2.14 a year at 13¢/kWh just to stand ready.
- Maker
- APC
- Model
- APC Back-UPS 500 (black)
- Model number
- BK500BLK
- Apparent power rating
- 500 VA
- Real power rating
- 300 W
- Power factor
- 0.60
- Topology
- Passive Standby
- Intended use
- Consumer
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 15 min
- Runtime at 100% load
- 3 min
- Battery warranty
- 3 yr
- Weighted efficiency
- 98.6%
- Efficiency at 25 / 50 / 75 / 100% load
- 97.4% / 98.6% / 99.0% / 99.1%
- Input power at no load
- 1.9 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
- Feb 2001
- 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 500 (black) Factory Serviced, BK500BLKW, Std Exch APC Back-UPS 500 (black), BK500BLKQ.
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2333441, 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 500 (black)
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Vertiv PSA5-500MT120 | 500 VA / 300 W | Line Interactive | 98.4% | 8 min |
| Vertiv PST5-500MT120 | 500 VA / 300 W | Passive Standby | 98.1% | 9 min |
| Tripp Lite AG-03AA | 500 VA / 300 W | Line Interactive | 98.1% | 14 min |
| Tripp Lite AG-030D | 500 VA / 260 W | Passive Standby | 97.6% | 7 min |
| Tripp Lite AGOM5880 | 500 VA / 300 W | Line Interactive | 99.3% | 11 min |
| CyberPower CP500PFCRM1U | 500 VA / 300 W | Line Interactive | 98.4% | 10 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 350VA X545 120V | 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 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 |