Can a power station run a sump pump?
Short answer: often yes, but surge is the hard part. A 1/2 HP pump needs about 3,250 W surge. Runtime depends on how often the pump cycles.
Pump power (LIFAN chart)
| Pump | Running W | Additional starting W | Peak needed |
|---|---|---|---|
| Sump Pump - 1/3 HP | 800 | 2,100 | 2,900 |
| Sump Pump - 1/2 HP | 1,050 | 2,200 | 3,250 |
Source: LIFAN wattage chart, checked 2026-10-27.
The math
Runtime (hours) = battery Wh × 0.85 ÷ (running W × cycle %). The cycle % values (10/25/50%) are estimates, not measured data: pumps only run when the pit fills. Example: 2,048 Wh with a 1/2 HP pump at 25% = 2,048 × 0.85 ÷ (1,050 × 0.25) = 6.6 h.
Sump Pump - 1/3 HP: runtime by battery size (estimates)
| Battery | 10% cycling | 25% cycling | 50% cycling |
|---|---|---|---|
| 1,000 Wh | 10.6 h | 4.3 h | 2.1 h |
| 2,000 Wh | 21.3 h | 8.5 h | 4.3 h |
| 3,000 Wh | 31.9 h | 12.8 h | 6.4 h |
| 4,000 Wh | 42.5 h | 17.0 h | 8.5 h |
| 5,000 Wh | 53.1 h | 21.3 h | 10.6 h |
Sump Pump - 1/2 HP: runtime by battery size (estimates)
| Battery | 10% cycling | 25% cycling | 50% cycling |
|---|---|---|---|
| 1,000 Wh | 8.1 h | 3.2 h | 1.6 h |
| 2,000 Wh | 16.2 h | 6.5 h | 3.2 h |
| 3,000 Wh | 24.3 h | 9.7 h | 4.9 h |
| 4,000 Wh | 32.4 h | 13.0 h | 6.5 h |
| 5,000 Wh | 40.5 h | 16.2 h | 8.1 h |
Verified models by pump size
Sump Pump - 1/3 HP (surge ≥ 2,900 W)
| Model | Wh | Surge W | Est. runtime at 25% |
|---|---|---|---|
| EcoFlow DELTA 3 Plus | 1,024 | 3,600 | 4.4 h |
| EcoFlow DELTA 3 | 1,024 | 3,600 | 4.4 h |
| Anker SOLIX C1000 Gen 2 | 1,024 | 3,000 | 4.4 h |
| Jackery Explorer 1000 v2 | 1,070 | 3,000 | 4.5 h |
| Jackery Explorer 1000 Plus | 1,264 | 4,000 | 5.4 h |
| Jackery Explorer 1500 v2 | 1,536 | 4,000 | 6.5 h |
| Jackery Explorer 2000 v2 | 2,042 | 4,400 | 8.7 h |
| Jackery Explorer 2000 Plus | 2,042 | 6,000 | 8.7 h |
| EcoFlow DELTA 2 Max | 2,048 | 4,800 | 8.7 h |
| Anker SOLIX C2000 Gen 2 | 2,048 | 4,000 | 8.7 h |
| EcoFlow DELTA Pro 3 | 4,096 | 8,000 | 17.4 h |
| Jackery Explorer 5000 Plus | 5,040 | 14,400 | 21.4 h |
Sump Pump - 1/2 HP (surge ≥ 3,250 W)
| Model | Wh | Surge W | Est. runtime at 25% |
|---|---|---|---|
| EcoFlow DELTA 3 Plus | 1,024 | 3,600 | 3.3 h |
| EcoFlow DELTA 3 | 1,024 | 3,600 | 3.3 h |
| Jackery Explorer 1000 Plus | 1,264 | 4,000 | 4.1 h |
| Jackery Explorer 1500 v2 | 1,536 | 4,000 | 5.0 h |
| Jackery Explorer 2000 v2 | 2,042 | 4,400 | 6.6 h |
| Jackery Explorer 2000 Plus | 2,042 | 6,000 | 6.6 h |
| EcoFlow DELTA 2 Max | 2,048 | 4,800 | 6.6 h |
| Anker SOLIX C2000 Gen 2 | 2,048 | 4,000 | 6.6 h |
| EcoFlow DELTA Pro 3 | 4,096 | 8,000 | 13.3 h |
| Jackery Explorer 5000 Plus | 5,040 | 14,400 | 16.3 h |
Models without a published surge rating (e.g. Anker SOLIX F3800 Plus) are left out. Specs from manufacturer pages; see the comparison table. Plug the pump straight into the station. Never backfeed house wiring without an electrician-installed transfer switch or inlet.
Size your whole outage in the calculator → · Fridge runtime · Wattage chart
FAQ
Can a power station run a sump pump?
Yes, if its surge rating covers the start. The LIFAN chart lists a 1/3 HP pump at 800 W running plus 2,100 W starting (2,900 W peak), and a 1/2 HP pump at 1,050 W plus 2,200 W (3,250 W peak).
How long will a power station run a sump pump?
It depends on how often the pump cycles, which depends on rain and your water table. That's why we show 10%, 25% and 50% run-time estimates. At 25%, a 1/2 HP pump uses about 6,300 Wh per day.
Is a power station a good sump pump backup?
It can bridge a short outage, but during heavy rain a sump pump can drain even large stations within hours. Consider a dedicated battery-backup sump system or a generator for long storms.