UPS battery backupsENERGY STAR certified
APC Smart-UPS SRT 6000VA RM 208V
6,000 VA / 6,000 W multi-mode double conversion UPS, model number SRT6KRMXLT.
Capacity
6,000 VA
6,000 W real power
Topology
Multi-Mode Double Conversion
Efficiency
94.6%
weighted, as tested
Runtime @ 50%
8 min
2 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 94.6% compares with a median of 94.6% across 98 certified units within 25% of its capacity. With nothing plugged in it still draws 69.2 W, about $79 a year at 13¢/kWh just to stand ready.
- Maker
- APC
- Model
- APC Smart-UPS SRT 6000VA RM 208V
- Model number
- SRT6KRMXLT
- Apparent power rating
- 6,000 VA
- Real power rating
- 6,000 W
- Power factor
- 1.00
- Topology
- Multi-Mode Double Conversion
- Intended use
- Commercial
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 8 min
- Runtime at 100% load
- 2 min
- Battery warranty
- 2 yr
- Weighted efficiency
- 94.6%
- Efficiency at 25 / 50 / 75 / 100% load
- 93.0% / 94.6% / 94.6% / 94.5%
- Input power at no load
- 69.2 W
- Outlets
- 5 (5 battery + surge, 0 surge only)
- Rack mountable
- Yes, 4U
- Rated input voltage
- 208-240 V
- Rated output voltage
- 208-240 V
- Connections
- Serial Port,Ethernet,USB Port
- Size (H x W x D)
- 174 x 432 x 719 mm
- Maker take-back program
- Yes
- On the market since
- Jan 2015
- ENERGY STAR certified
- 28 Dec 2018
Certified under the same record
The maker lists these as the same machine or a variant of it: APC Smart-UPS SRT 5000VA RM 208V, SRT6KRMXLT-A, APC Smart-UPS SRT 6000VA RM 208V Factory Serviced, SRT6KRMXLTW, Std Exch APC Smart-UPS SRT 6000VA RM 208V, SRT6KRMXLTQ.
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2332947, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the APC Smart-UPS SRT 6000VA RM 208V
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 |
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 |