How long will the EcoFlow RIVER 3 Plus run a chest freezer?

About 9 hours from a full charge. A chest freezer averages about 26 W (80 W running, on about 33% of the time), and the 286 Wh battery gives about 243 Wh after inverter losses. That is 11% of the battery an hour.

Will the EcoFlow RIVER 3 Plus start a chest freezer?

Yes. It needs about 700 W for a moment when the compressor starts, and the EcoFlow RIVER 3 Plus is rated for 1,200 W surge, 1.7 times that. Avoid starting other motors at the same moment.

How much of the battery does a chest freezer use in a day?

About 634 Wh a day (26 W × 24 hours), more than the 243 Wh the EcoFlow RIVER 3 Plus can deliver, so plan to recharge every 9 hours.

EcoFlow · Will it run?

Can the EcoFlow RIVER 3 Plus run a chest freezer (7 cu ft)?

Published October 12, 2026

Short answerYes

Yes. The EcoFlow RIVER 3 Plus runs a chest freezer for about 9 hours from a full charge. It needs about 700 W for a moment when the compressor starts, within the 1,200 W surge rating, then about 80 W while running against 600 W continuous.

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Key numbers

Runtime: 9 hrs; from a full charge
Battery used per hour: 11%; at 26 W average

Chest freezer (7 cu ft)

Running: 80 W; 50–150 W range
Start-up: 700 W
Average: 26 W; on 33% of the time

EcoFlow RIVER 3 Plus

Battery: 286 Wh; about 243 Wh usable
Output: 600 W; continuous
Surge: 1,200 W; start-up peak

How we worked it out: 286 Wh × 0.85 ÷ 26 W average (80 W × 0.33 duty) = about 9 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

EcoFlow RIVER 3 Plus

286 Wh · 600 W output · 1,200 W surge · 10.4 lb

Full specs and runtimes

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What else the EcoFlow RIVER 3 Plus runs

One device at a time, from a full charge.

Other power stations for a chest freezer

The nearest sizes that also run it.

Keep going

Real runtime depends on the model you own, room temperature and battery age. The 9 hours above is an estimate, not a measured result.

Common questions

How long will the EcoFlow RIVER 3 Plus run a chest freezer?: About 9 hours from a full charge. A chest freezer averages about 26 W (80 W running, on about 33% of the time), and the 286 Wh battery gives about 243 Wh after inverter losses. That is 11% of the battery an hour.
Will the EcoFlow RIVER 3 Plus start a chest freezer?: Yes. It needs about 700 W for a moment when the compressor starts, and the EcoFlow RIVER 3 Plus is rated for 1,200 W surge, 1.7 times that. Avoid starting other motors at the same moment.
How much of the battery does a chest freezer use in a day?: About 634 Wh a day (26 W × 24 hours), more than the 243 Wh the EcoFlow RIVER 3 Plus can deliver, so plan to recharge every 9 hours.