UPS battery backupsENERGY STAR certified
Liebert EXS F5 20k series
20 kVA / 20 kW multi-mode double conversion UPS, model number 53*20J* * * * * * *.
Capacity
20 kVA
20 kW real power
Topology
Multi-Mode Double Conversion
Efficiency
94.9%
weighted, as tested
Runtime @ 50%
12 min
26 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 20 kVA and 20 kW, so the equipment plugged into its battery outlets should draw no more than about 16 kW if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 94.9% compares with a median of 95.6% across 45 certified units within 25% of its capacity. With nothing plugged in it still draws 162.4 W, about $185 a year at 13¢/kWh just to stand ready.
- Maker
- Liebert
- Model
- Liebert EXS F5 20k series
- Model number
- 53*20J* * * * * * *
- Apparent power rating
- 20 kVA
- Real power rating
- 20 kW
- Power factor
- 1.00
- Topology
- Multi-Mode Double Conversion
- Intended use
- Consumer, Commercial, Data Center
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 12 min
- Runtime at 100% load
- 26 min
- Battery warranty
- 1 yr
- Weighted efficiency
- 94.9%
- Efficiency at 25 / 50 / 75 / 100% load
- 93.3% / 94.1% / 93.5% / 92.6%
- Input power at no load
- 162.4 W
- Rack mountable
- No
- Modular
- Yes
- Rated input voltage
- 208-220 V
- Rated output voltage
- 208-220 V
- Connections
- USB Port
- Size (H x W x D)
- 2000 x 600 x 1000 mm
- Maker take-back program
- No
- On the market since
- Sep 2023
- ENERGY STAR certified
- 25 Sep 2023
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2668212, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the Liebert EXS F5 20k series
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Schneider Electric Galaxy VS 30kW 480V w/o Batteries, Start-up 5x8 | 20 kVA / 20 kW | Multi-Mode Double Conversion | 95.9% | - |
| Schneider Electric GVSUPS80KGS | 20 kVA / 20 kW | Multi-Mode Double Conversion | 95.9% | - |
| Schneider Electric Galaxy VS 40kW 480V w/o Batteries, Start-up 5x8 | 20 kVA / 20 kW | Multi-Mode Double Conversion | 95.9% | - |
| Schneider Electric Galaxy VS 20kW 480V w/o Batteries, Start-up 5x8 | 20 kVA / 20 kW | Multi-Mode Double Conversion | 95.9% | - |
| Schneider Electric Galaxy VS 50kW 480V w/o Batteries, Start-up 5x8 | 20 kVA / 20 kW | Multi-Mode Double Conversion | 95.9% | - |
| Schneider Electric Galaxy VS 100kW 480V w/o Batteries, Start-up 5x8 | 20 kVA / 20 kW | Multi-Mode Double Conversion | 95.9% | - |
Liebert
More Liebert UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| 10B14763GG103 | 450 kVA / 405 kW | Multi-Mode Double Conversion | 97.2% | 30 min |
| 10B14789GF103 | 825 kVA / 743 kW | Multi-Mode Double Conversion | 97.7% | 30 min |
| 47SA040A[0|1|2|3][C|Y][0|F|H|M|G|L][0|1] | 10 kVA / 10 kW | Multi-Mode Double Conversion | 94.2% | 34 min |
| 47SA100A[0|1|2|3][C|Y][0|F|H|M|G|L][0|1] | 60 kVA / 60 kW | Multi-Mode Double Conversion | 95.8% | 10 min |
| 47SA120A[0|1|2|3][C|Y][0|F|H|M|G|L][0|1] | 120 kVA / 120 kW | Multi-Mode Double Conversion | 95.6% | 10 min |
| 51SA030QAA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 96.3% | 10 min |
| 51SA030QBA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 95.2% | 10 min |
| 51SA050BAA | 50 kVA / 50 kW | Multi-Mode Double Conversion | 96.4% | 10 min |