Sump pumps · EcoFlow DELTA 2 Max
How Long Will an EcoFlow DELTA 2 Max Run a Sump Pump?
About 2.2 h for a 1/3 hp sump pump (800 W), by our math: 2,048 Wh × 0.85 ÷ 800 W. Across the cases below: 1.7 h to 2.2 h.
| Spec | EcoFlow DELTA 2 Max |
|---|---|
| Battery | 2,048 Wh (maker spec) |
| Usable (× 0.85) | 1,741 Wh |
| Output / surge | 2,400 W / 4,800 W |
| Own draw | not listed |
| Solar input | 1,000 W |
| Price | $1,049 (Oct 24) at EcoFlow |
Check DELTA 2 Max price at EcoFlowPaid linkDELTA 2 Max on AmazonPaid link
Sump pump hours on the DELTA 2 Max
| Case | Watts | On the DELTA 2 Max |
|---|---|---|
| 1/3 hp sump pump (Honda) (EWEB) | 800 W | 2.2 h |
| 1/2 hp sump pump (EWEB) | 1,050 W | 1.7 h |
Wh × 0.85 ÷ (watts + the station’s own draw, where the maker lists it).
Hours are nonstop pumping; the pump only runs while water comes in, so in most storms it lasts much longer.
Can the DELTA 2 Max start it?
Generator charts list about 1,500–2,100 W in total to start a 1/3 hp pump and 2,100–3,250 W for 1/2 hp (Honda) (EWEB). The DELTA 2 Max has a 4,800 W surge. 1/3 hp sump pump: covers it; 1/2 hp sump pump: covers it.
How much an hour takes
An hour of a 1/3 hp sump pump running nonstop uses about 800 Wh, about 46% of the DELTA 2 Max’s usable 1,741 Wh. At its 1,000 W solar input and our 75% assumption, strong sun puts about 750 Wh an hour back into the battery.
Keep the station dry and above any flood level.
Sump pump on similar stations
| Station | Capacity | 1/3 hp sump pump | Price |
|---|---|---|---|
| EcoFlow DELTA 3 Max Plus | 2,048 Wh | 2.2 h | $1,199 |
| Anker SOLIX C2000 Gen 2 | 2,048 Wh | 2.2 h | $899.99 (Oct 24) |
| BLUETTI AC200L | 2,048 Wh | 2.1 h | $899 |
| Jackery Explorer 2000 v2 | 2,042 Wh | 2.2 h | $899 (Oct 24) |
Maker prices, Oct 26, 2026, unless dated. Checkout price applies.
More: EcoFlow DELTA 2 Max specs and every runtime · Sump pumps on every station · calculator for your own devices.
Quick answers
How long will the EcoFlow DELTA 2 Max run a sump pump?
About 2.2 h for a 1/3 hp sump pump (800 W), by our math: 2,048 Wh × 0.85 ÷ 800 W.
Can the EcoFlow DELTA 2 Max start a sump pump?
Generator charts list about 1,500–2,100 W in total to start a 1/3 hp pump and 2,100–3,250 W for 1/2 hp. The DELTA 2 Max has a 4,800 W surge. 1/3 hp sump pump: covers it; 1/2 hp sump pump: covers it.
How long does the EcoFlow DELTA 2 Max take to recharge with solar?
About 2.7 hours of strong sun from empty at its 1,000 W solar input, by our 75% assumption; clouds and winter sun add time.
“Paid link” = we earn a commission. Same math either way. See how we make money.