W Box UPS, ENERGY STAR certified
W Box 0E-850V8LCD
850 VA / 510 W passive standby UPS.
Capacity
850 VA
510 W real power
Topology
Passive Standby
Efficiency
98.5%
weighted, as tested
Runtime @ 50%
6 min
1 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 850 VA and 510 W, so the equipment plugged into its battery outlets should draw no more than about 408 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 98.5% compares with a median of 98.6% across 189 certified units within 25% of its capacity. With nothing plugged in it still draws 3.2 W, about $3.64 a year at 13¢/kWh just to stand ready.
- Maker
- W Box
- Model
- 0E-850V8LCD
- Apparent power rating
- 850 VA
- Real power rating
- 510 W
- Power factor
- 0.60
- Topology
- Passive Standby
- Intended use
- Consumer
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 6 min
- Runtime at 100% load
- 1 min
- Battery warranty
- 3 yr
- Weighted efficiency
- 98.5%
- Efficiency at 25 / 50 / 75 / 100% load
- 97.6% / 98.5% / 98.7% / 98.8%
- Input power at no load
- 3.2 W
- Rack mountable
- No
- Rated input voltage
- 120 V
- Rated output voltage
- 120 V
- Connections
- USB Port
- Size (H x W x D)
- 78 x 178 x 310 mm
- Maker take-back program
- Yes
- On the market since
- Jan 2019
- ENERGY STAR certified
- 6 Sep 2023
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2650005, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the 0E-850V8LCD
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| CyberPower CP825AVRLCDa | 850 VA / 450 W | Line Interactive | 98.9% | 14 min |
| CyberPower CP825LCDa | 850 VA / 450 W | Passive Standby | 98.4% | 14 min |
| APC BX850M | 850 VA / 510 W | Line Interactive | 98.8% | 9 min |
| CyberPower EC850LCD | 850 VA / 510 W | Passive Standby | 98.5% | 6 min |
| CyberPower S175UC | 850 VA / 510 W | Line Interactive | 98.7% | 9 min |
| Tripp Lite AG-0316 | 850 VA / 425 W | Passive Standby | 99.0% | 9 min |
W Box
More W Box UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| 0E-1000V9RD | 1,000 VA / 600 W | Line Interactive | 98.6% | 9 min |
| 0E-1000VASNM | 1,500 VA / 900 W | Line Interactive | 99.3% | 11 min |
| 0E-1500V10RD | 1,500 VA / 900 W | Line Interactive | 98.6% | 12 min |
| 0E-1500VASNM | 1,500 VA / 900 W | Line Interactive | 98.9% | 18 min |
| 0E-350V6 | 350 VA / 255 W | Passive Standby | 97.9% | 8 min |
| 0E-825V12VRD | 825 VA / 480 W | Line Interactive | 98.6% | 10 min |
| 0E-RCKMT1000 | 1,000 VA / 700 W | Line Interactive | 98.8% | 17 min |
| 0E-RCKMT1500 | 1,500 VA / 1,050 W | Line Interactive | 98.9% | 16 min |