How Long Will the EcoFlow Delta 2 Run a Sump Pump (1/3 HP)?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 1024Wh (LFP) |
|---|---|
| Usable energy | 870Wh (85% via AC outlets) |
| Continuous AC output | 1800W |
| Surge rating | 2700W |
| Sump pump (1/3 HP) running watts | 800W |
| Startup watts | 2000W |
| Average draw | 200W |
| Estimated runtime | 4.4 hours |
| Energy per day of typical use | 4.8 kWh |
1024Wh × 0.85 = 870Wh usable ÷ 200W average = 4.4 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your sump pump (1/3 HP) 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’t fully keep up. A sump pump (1/3 HP) uses about 4.8 kWh a day at 24 hours of use, more than the EcoFlow Delta 2’s best-case solar harvest. Solar will stretch the runtime but not sustain it.
Tips
- Sump pumps run in short bursts; how often depends on how much water is coming in. The motor start is the main hurdle.
- You’ll still have about 1000W of AC capacity left for other devices at the same time, though they’ll share the same battery.
- 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 sump pump (1/3 HP)
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| EcoFlow River 2 Pro | 768Wh | 800W | 3.3 hours | Startup risk |
| Anker SOLIX C800 Plus | 768Wh | 1200W | 3.3 hours | Startup risk |
| Jackery Explorer 1000 | 1002Wh | 1000W | 4.3 hours | Yes |
| DJI Power 1000 | 1024Wh | 2200W | 4.4 hours | Yes |
| Anker SOLIX C1000 | 1056Wh | 1800W | 4.5 hours | Yes |
| Jackery Explorer 1000 v2 | 1070Wh | 1500W | 4.5 hours | Yes |
| Bluetti AC180 | 1152Wh | 1800W | 4.9 hours | Yes |
| Jackery Explorer 1000 Plus | 1264Wh | 2000W | 5.4 hours | Yes |
FAQ
Will the EcoFlow Delta 2 run a sump pump (1/3 HP) overnight?
No. At about 200W average it runs out after 4.4 hours. For a full night you need at least 1900Wh of 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.