UPS battery backupsENERGY STAR certified
Emerson SOLAHD S4K2U3000D
3,000 VA / 2,700 W double conversion UPS, model number S4K2U3000D.
Capacity
3,000 VA
2,700 W real power
Topology
Double Conversion
Efficiency
93.5%
weighted, as tested
Runtime @ 50%
13 min
4 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 3,000 VA and 2,700 W, so the equipment plugged into its battery outlets should draw no more than about 2,160 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 93.5% compares with a median of 93.1% across 95 certified units within 25% of its capacity. With nothing plugged in it still draws 43.0 W, about $49 a year at 13¢/kWh just to stand ready.
- Maker
- Emerson
- Model
- SOLAHD S4K2U3000D
- Model number
- S4K2U3000D
- Apparent power rating
- 3,000 VA
- Real power rating
- 2,700 W
- Power factor
- 0.90
- Topology
- Double Conversion
- Intended use
- Commercial
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 13 min
- Runtime at 100% load
- 4 min
- Battery warranty
- 2 yr
- Weighted efficiency
- 93.5%
- Efficiency at 25 / 50 / 75 / 100% load
- 91.8% / 93.8% / 93.7% / 93.1%
- Input power at no load
- 43.0 W
- Rack mountable
- Yes
- Rated input voltage
- 110-125 V
- Rated output voltage
- 110-125 V
- Connections
- Serial Port,Other,Ethernet,USB Port
- Size (H x W x D)
- 85 x 430 x 627 mm
- Maker take-back program
- Yes
- On the market since
- Jan 2024
- ENERGY STAR certified
- 31 Oct 2023
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2697703, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the SOLAHD S4K2U3000D
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| CyberPower PR3000RTXL2UHVA | 3,000 VA / 3,000 W | Line Interactive | 98.9% | 11 min |
| Delta RT-3K | 3,000 VA / 2,700 W | Double Conversion | 92.0% | 12 min |
| CyberPower OL3000RTXL2UHV | 3,000 VA / 2,700 W | Double Conversion | 92.0% | 11 min |
| CyberPower OL3000RTXL2UHVN | 3,000 VA / 2,700 W | Double Conversion | 92.0% | 11 min |
| CyberPower OL3000RTXL2UHVTAA | 3,000 VA / 2,700 W | Double Conversion | 92.0% | 11 min |
| CyberPower OL3000RT JP | 3,000 VA / 2,700 W | Double Conversion | 91.5% | 11 min |
Emerson
More Emerson UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| SOLAHD S4K2U1000D | 1,000 VA / 1,000 W | Double Conversion | 91.9% | 18 min |
| SOLAHD S4K2U1500D | 1,500 VA / 1,350 W | Double Conversion | 92.4% | 19 min |
| SOLAHD S4K2U2000D | 2,000 VA / 1,800 W | Double Conversion | 92.3% | 12 min |