How Long Will the EcoFlow Delta 2 Run a CPAP Machine?
Updated 2026-10-17 · Yes
Medical equipment: these are estimates. Test your own setup and keep a backup plan.
The numbers
| Battery capacity | 1024Wh (LFP) |
|---|---|
| Usable energy | 942Wh (92% via 12V/USB DC output) |
| Continuous AC output | 1800W |
| Surge rating | 2700W |
| CPAP machine running watts | 30W |
| Startup watts | 30W |
| Average draw | 30W |
| Estimated runtime | 31 hours |
| Energy per day of typical use | 240Wh |
1024Wh × 0.92 = 942Wh usable ÷ 30W average = 31.4 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your CPAP machine and enter its real wattage.
Recharging with solar
The EcoFlow Delta 2 accepts up to 500W of solar input. In real conditions that harvests about 1.9 kWh on a sunny day (5 peak-sun hours), or about 750Wh with one 200W panel.
Solar can keep up. A CPAP machine uses about 240Wh a day at 8 hours of use, so with enough panels and good sun the EcoFlow Delta 2 can run it indefinitely.
Tips
- Figures assume the humidifier and heated tube are off. Running a CPAP from its 12V/DC adapter instead of the AC outlet stretches runtime noticeably.
- Running it from the EcoFlow Delta 2’s DC port instead of the AC outlet avoids inverter losses: about 72Wh more usable energy.
- The EcoFlow Delta 2 uses LiFePO4 (LFP) cells, rated for thousands of cycles, so running it down daily won’t wear it out quickly.
Other power stations running a CPAP machine
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| EcoFlow River 2 Pro | 768Wh | 800W | 24 hours | Yes |
| Anker SOLIX C800 Plus | 768Wh | 1200W | 24 hours | Yes |
| Jackery Explorer 1000 | 1002Wh | 1000W | 31 hours | Yes |
| DJI Power 1000 | 1024Wh | 2200W | 31 hours | Yes |
| Anker SOLIX C1000 | 1056Wh | 1800W | 32 hours | Yes |
| Jackery Explorer 1000 v2 | 1070Wh | 1500W | 33 hours | Yes |
| Bluetti AC180 | 1152Wh | 1800W | 35 hours | Yes |
| Jackery Explorer 1000 Plus | 1264Wh | 2000W | 39 hours | Yes |
FAQ
Will the EcoFlow Delta 2 run a CPAP machine overnight?
Yes. Eight hours uses about 240Wh, roughly 25% of the EcoFlow Delta 2’s usable capacity.
How long does the EcoFlow Delta 2 take to recharge with solar?
With its maximum 500W of solar input it refills in about 2.7 hours of strong sun. With a single 200W panel, expect about 6.8 hours of full sun.
Is the EcoFlow Delta 2 safe for medical equipment?
These are estimates, not medical advice. Check your device’s actual power draw, test your setup before you rely on it, and always keep a backup plan approved by your doctor or equipment supplier.