How long will the BLUETTI Apex 300 run a sump pump?

About 29 hours from a full charge. A sump pump averages about 80 W (800 W running, on about 10% of the time), and the 2,765 Wh battery gives about 2,350 Wh after inverter losses. That is 3.4% of the battery an hour.

Will the BLUETTI Apex 300 start a sump pump?

Yes. It needs about 2,100 W for a moment when the pump starts, and the BLUETTI Apex 300 is rated for 7,680 W surge, 3.7 times that. Avoid starting other motors at the same moment.

How much of the battery does a sump pump use in a day?

About 1,920 Wh a day (80 W × 24 hours), 82% of the 2,350 Wh the BLUETTI Apex 300 can deliver.

Bluetti · Will it run?

Can the BLUETTI Apex 300 run a sump pump (1/3 HP)?

Published October 11, 2026

Short answerYes

Yes. The BLUETTI Apex 300 runs a sump pump for about 29 hours from a full charge. It needs about 2,100 W for a moment when the pump starts, well within the 7,680 W surge rating, then about 800 W while running against 3,840 W continuous.

Add your other devices

Key numbers

Runtime: 29 hrs; from a full charge
Battery used per hour: 3.4%; at 80 W average

Sump pump (1/3 HP)

Running: 800 W; 700–1115 W range
Start-up: 2,100 W
Average: 80 W; on 10% of the time

BLUETTI Apex 300

Battery: 2,765 Wh; about 2,350 Wh usable
Output: 3,840 W; continuous
Surge: 7,680 W; start-up peak

How we worked it out: 2,765 Wh × 0.85 ÷ 80 W average (800 W × 0.1 duty) = about 29 hours. The 0.85 covers inverter and battery losses. We do not test units ourselves; the numbers come from the official spec sheets and typical device draws. How we pick

BLUETTI Apex 300

2,765 Wh · 3,840 W output · 7,680 W surge · 83.8 lb

Full specs and runtimes

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What else the BLUETTI Apex 300 runs

One device at a time, from a full charge.

Other power stations for a sump pump

The nearest sizes that also run it.

Keep going

Real runtime depends on the model you own, room temperature and battery age. The 29 hours above is an estimate, not a measured result.

Common questions

How long will the BLUETTI Apex 300 run a sump pump?: About 29 hours from a full charge. A sump pump averages about 80 W (800 W running, on about 10% of the time), and the 2,765 Wh battery gives about 2,350 Wh after inverter losses. That is 3.4% of the battery an hour.
Will the BLUETTI Apex 300 start a sump pump?: Yes. It needs about 2,100 W for a moment when the pump starts, and the BLUETTI Apex 300 is rated for 7,680 W surge, 3.7 times that. Avoid starting other motors at the same moment.
How much of the battery does a sump pump use in a day?: About 1,920 Wh a day (80 W × 24 hours), 82% of the 2,350 Wh the BLUETTI Apex 300 can deliver.