Can a power station work as a UPS? Switch times by model
Most switch to battery in 10 to 20 milliseconds, which is fine for a router and risky for a desktop PC. Each brand's stated switch time and the warnings in its manual.
Most power stations can sit between the wall and your devices and take over when the power cuts. Whether that is good enough depends on how fast they switch, and the manuals are clear that this is not the same as a dedicated UPS.
How it works
Plug the station into the wall and your devices into the station. While the grid is up, power passes through to your devices. When it fails, the station switches to its battery. That gap, measured in milliseconds, is what matters.
Switch time, model by model
| Station | What the manual says |
|---|---|
| Anker SOLIX C300 | UPS under 10 ms |
| EcoFlow RIVER 3 Plus | Within 10 ms, for loads under 600 W |
| EcoFlow DELTA 3 Plus | Standby UPS, 10 ms |
| EcoFlow DELTA Pro 3 | 10 ms |
| Jackery Explorer 1500 v2 | 10 ms, with bypass mode on |
| BLUETTI AC180 | 20 ms or less. Turn Grid Enhancement mode off, or switching takes longer |
| Jackery Explorer 240 v2 | Within 20 ms; does not support 0 ms switching |
| Jackery Explorer 1000 v2 | Within 20 ms; does not support 0 ms switching |
| Jackery Explorer 2000 v2 | Within 20 ms; does not support 0 ms switching |
| Jackery Explorer 2000 Plus | Within 20 ms; does not support 0 ms switching |
| Jackery Explorer 5000 Plus | Backup UPS 20 ms or less; online UPS 0 ms |
| Jackery HomePower 3000 | Does not support 0 ms switching |
What the manuals warn about
Jackery's manuals say do not connect equipment with high uninterruptible power requirements, such as data servers and workstations, to test several times to confirm compatibility, and to connect only one device. BLUETTI's AC70 and AC200L manuals exclude from the warranty damage from using the station with devices that need a high-performance UPS, naming data servers, workstations and medical equipment. BLUETTI's AC180 manual says to test the function before use to avoid data loss.
What that means for your devices
Routers, modems, lights, fridges, Starlink: a 10 to 20 ms gap is usually fine. Many keep running; a router may restart.
Desktop PCs and NAS boxes: some ride through a 10 ms gap and some reboot. Test it the way the manuals say: pull the station's wall plug with the PC running and unsaved work closed.
Medical devices, including CPAP: follow the device maker's advice, not a power station manual.
Keep the load under the limit
While passing grid power through, some stations allow less output than their rating. EcoFlow's RIVER 3 Plus is rated for UPS with loads under 600 W, and Jackery's 2000 v2 manual says its peak output in UPS mode is 1,500 W, below its rated 2,200 W.