How Long Will the EcoFlow Delta Pro Run a Window AC (5,000 BTU)?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 3600Wh (LFP) |
|---|---|
| Usable energy | 3060Wh (85% via AC outlets) |
| Continuous AC output | 3600W |
| Surge rating | 7200W |
| Window AC (5,000 BTU) running watts | 450W |
| Startup watts | 1300W |
| Average draw | 315W |
| Estimated runtime | 9.7 hours |
| Energy per day of typical use | 2.5 kWh |
3600Wh × 0.85 = 3060Wh usable ÷ 315W average = 9.7 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your window AC (5,000 BTU) and enter its real wattage.
Recharging with solar
The EcoFlow Delta Pro accepts up to 1600W of solar input. In real conditions that harvests about 6 kWh on a sunny day (5 peak-sun hours), or about 750Wh with one 200W panel.
Solar can keep up. A window AC (5,000 BTU) uses about 2.5 kWh a day at 8 hours of use, so with enough panels and good sun the EcoFlow Delta Pro can run it indefinitely.
Tips
- Small window units draw around 450W while the compressor runs. On hot days it rarely switches off, so expect 60–80% duty.
- You’ll still have about 3150W of AC capacity left for other devices at the same time, though they’ll share the same battery.
- The EcoFlow Delta Pro 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 window AC (5,000 BTU)
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| Goal Zero Yeti 1500X | 1516Wh | 2000W | 4.1 hours | Yes |
| Jackery Explorer 2000 Plus | 2042Wh | 3000W | 5.5 hours | Yes |
| EcoFlow Delta 2 Max | 2048Wh | 2400W | 5.5 hours | Yes |
| Anker SOLIX F2000 | 2048Wh | 2400W | 5.5 hours | Yes |
| Bluetti AC200L | 2048Wh | 2400W | 5.5 hours | Yes |
| Bluetti AC200MAX | 2048Wh | 2200W | 5.5 hours | Yes |
| Anker SOLIX F3800 | 3840Wh | 6000W | 10 hours | Yes |
| EcoFlow Delta Pro 3 | 4096Wh | 4000W | 11 hours | Yes |
FAQ
Will the EcoFlow Delta Pro run a window AC (5,000 BTU) overnight?
Yes. Eight hours uses about 2520Wh, roughly 82% of the EcoFlow Delta Pro’s usable capacity.
How long does the EcoFlow Delta Pro take to recharge with solar?
With its maximum 1600W of solar input it refills in about 3 hours of strong sun. With a single 200W panel, expect about 4.8 sunny days (24 hours of full sun).