How Long Will the EcoFlow Delta Pro 3 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 | 4096Wh (LFP) |
|---|---|
| Usable energy | 3768Wh (92% via 12V/USB DC output) |
| Continuous AC output | 4000W |
| Surge rating | 8000W |
| CPAP machine running watts | 30W |
| Startup watts | 30W |
| Average draw | 30W |
| Estimated runtime | 5.2 days |
| Energy per day of typical use | 240Wh |
4096Wh × 0.92 = 3768Wh usable ÷ 30W average = 125.6 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 Pro 3 accepts up to 2600W of solar input. In real conditions that harvests about 9.8 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 Pro 3 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 Pro 3’s DC port instead of the AC outlet avoids inverter losses: about 287Wh more usable energy.
- The EcoFlow Delta Pro 3 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 |
|---|---|---|---|---|
| Goal Zero Yeti 1500X | 1516Wh | 2000W | 46 hours | Yes |
| Jackery Explorer 2000 Plus | 2042Wh | 3000W | 2.6 days | Yes |
| EcoFlow Delta 2 Max | 2048Wh | 2400W | 2.6 days | Yes |
| Anker SOLIX F2000 | 2048Wh | 2400W | 2.6 days | Yes |
| Bluetti AC200L | 2048Wh | 2400W | 2.6 days | Yes |
| Bluetti AC200MAX | 2048Wh | 2200W | 2.6 days | Yes |
| EcoFlow Delta Pro | 3600Wh | 3600W | 4.6 days | Yes |
| Anker SOLIX F3800 | 3840Wh | 6000W | 4.9 days | Yes |
FAQ
Will the EcoFlow Delta Pro 3 run a CPAP machine overnight?
Yes. Eight hours uses about 240Wh, roughly 6% of the EcoFlow Delta Pro 3’s usable capacity.
How long does the EcoFlow Delta Pro 3 take to recharge with solar?
With its maximum 2600W of solar input it refills in about 2.1 hours of strong sun. With a single 200W panel, expect about 5.5 sunny days (27 hours of full sun).
Is the EcoFlow Delta Pro 3 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.