UPS battery backupsENERGY STAR certified
Emerson / SOLAHD S4K4U6000D
6,000 VA / 6,000 W multi-mode double conversion UPS.
Capacity
6,000 VA
6,000 W real power
Topology
Multi-Mode Double Conversion
Efficiency
94.0%
weighted, as tested
Runtime @ 50%
9 min
3 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 6,000 VA and 6,000 W, so the equipment plugged into its battery outlets should draw no more than about 4,800 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 94.0% compares with a median of 94.6% across 98 certified units within 25% of its capacity. With nothing plugged in it still draws 43.6 W, about $50 a year at 13¢/kWh just to stand ready.
- Maker
- Emerson / SOLAHD
- Model
- S4K4U6000D
- Apparent power rating
- 6,000 VA
- Real power rating
- 6,000 W
- Power factor
- 1.00
- Topology
- Multi-Mode Double Conversion
- Intended use
- Commercial, Data Center
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 9 min
- Runtime at 100% load
- 3 min
- Battery warranty
- 2 yr
- Weighted efficiency
- 94.0%
- Efficiency at 25 / 50 / 75 / 100% load
- 93.6% / 94.3% / 94.0% / 93.6%
- Input power at no load
- 43.6 W
- Rack mountable
- Yes
- Rated input voltage
- 100-125 V
- Rated output voltage
- 100-125 V
- Connections
- Ethernet,USB Port
- Size (H x W x D)
- 173 x 430 x 650 mm
- Maker take-back program
- No
- On the market since
- Aug 2025
- ENERGY STAR certified
- 28 Mar 2025
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 4005996, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the S4K4U6000D
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Liebert GXT5-6000IRT5UXLN | 6,000 VA / 6,000 W | Multi-Mode Double Conversion | 94.9% | 14 min |
| Vertiv GXT5-6000IRT5UXLN | 6,000 VA / 6,000 W | Multi-Mode Double Conversion | 94.9% | 14 min |
| Liebert GXE-06k00TL1102C00 | 6,000 VA / 5,400 W | Multi-Mode Double Conversion | 95.4% | 14 min |
| Vertiv GXE-06k00TL1102C00 | 6,000 VA / 5,400 W | Multi-Mode Double Conversion | 95.4% | 14 min |
| Eaton 9PX6Ki | 6,000 VA / 5,400 W | Double Conversion | 93.7% | 8 min |
| Eaton 9PX6K | 6,000 VA / 5,400 W | Double Conversion | 93.7% | 8 min |