UPS battery backupsENERGY STAR certified
APC SRTL8KRM4UT
8,000 VA / 8,000 W multi-mode double conversion UPS.
Smart-UPS Ultra On-Line Lithium-ion 8kVA/8kW 4URack/Tower 208/240V
Capacity
8,000 VA
8,000 W real power
Topology
Multi-Mode Double Conversion
Efficiency
96.7%
weighted, as tested
Runtime @ 50%
15 min
7 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 8,000 VA and 8,000 W, so the equipment plugged into its battery outlets should draw no more than about 6,400 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 96.7% compares with a median of 94.8% across 92 certified units within 25% of its capacity. With nothing plugged in it still draws 102.0 W, about $116 a year at 13¢/kWh just to stand ready.
- Maker
- APC
- Model
- SRTL8KRM4UT
- Description
- Smart-UPS Ultra On-Line Lithium-ion 8kVA/8kW 4URack/Tower 208/240V
- Apparent power rating
- 8,000 VA
- Real power rating
- 8,000 W
- Power factor
- 1.00
- Topology
- Multi-Mode Double Conversion
- Intended use
- Commercial
- Battery
- Lithium-ion Battery
- Runtime at 50% load
- 15 min
- Runtime at 100% load
- 7 min
- Battery warranty
- 5 yr
- Weighted efficiency
- 96.7%
- Efficiency at 25 / 50 / 75 / 100% load
- 93.5% / 95.7% / 96.3% / 96.5%
- Input power at no load
- 102.0 W
- Outlets
- 4 (4 battery + surge, 0 surge only)
- Rack mountable
- Yes
- Rated input voltage
- 208-240 V
- Rated output voltage
- 208-240 V
- Connections
- Ethernet
- Size (H x W x D)
- 175 x 432 x 731 mm
- Maker take-back program
- Yes
- On the market since
- Jan 2024
- ENERGY STAR certified
- 27 Dec 2023
Certified under the same record
The maker lists these as the same machine or a variant of it: Smart-UPS Ultra On-Line Lithium-ion 8kVA/8kW 4U Rack/Tower 208/240V Factory Serviced, SRTL8KRM4UTW, Std Exch Smart-UPS Ultra On-Line Lithium-ion 8kVA/8kW 4U Rack/Tower 208/240V, SRTL8KRM4UTQ.
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 3354469, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the SRTL8KRM4UT
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Delta RT-8K | 8,000 VA / 8,000 W | Double Conversion | 94.5% | 15 min |
| Eaton 9PX8KPM | 8,000 VA / 7,200 W | Double Conversion | 94.6% | 16 min |
| CyberPower OL8KRTHD | 8,000 VA / 8,000 W | Double Conversion | 94.6% | 7 min |
| Liebert GXT5LI-8000GVRT3UXLN | 8,000 VA / 8,000 W | Double Conversion | 95.0% | 15 min |
| Minuteman ED8KRT | 8,000 VA / 7,200 W | Double Conversion | 94.1% | 11 min |
| Eaton 9PX8KIRTNG2 | 8,000 VA / 8,000 W | Double Conversion | 97.3% | 15 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 500 (black) | 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 |