- 75W
- while running, 300W to start
- 630Wh
- used over a full day
- 15 of 15
- models we track can run it
- Cheapest for a short outageEcoFlow River 37.9 hr$239Check price
- Best for a day and a halfJackery Explorer 1000 v234.6 hr$499Check price
- Best for daily off-grid useBluetti Elite 200 V22.8 days$899Check price
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Runtime for every model
| Model | Runtime | Capacity | Output | Weight | Price | Per Wh |
|---|---|---|---|---|---|---|
| EcoFlow River 3 | 7.9 hr | 245Wh | 300W | 7.8 lb | $239 | $0.98 |
| Jackery Explorer 300 v2 | 9.3 hr | 288Wh | 300W | 8.2 lb | $299 | $1.04 |
| Anker Solix C300 | 9.3 hr | 288Wh | 300W | 9.1 lb | $249 | $0.86 |
| EcoFlow River 3 Plus | 9.3 hr | 286Wh | 600W | 10.4 lb | $299 | $1.05 |
| Bluetti AC70 | 24.9 hr | 768Wh | 1,000W | 22.5 lb | $359 | $0.47 |
| EcoFlow Delta 3 Plus | 33.2 hr | 1,024Wh | 1,800W | 27.6 lb | $669 | $0.65 |
| Jackery Explorer 1000 v2 | 34.6 hr | 1,070Wh | 1,500W | 23.8 lb | $499 | $0.47 |
| Anker Solix C1000 Gen 2 | 33.2 hr | 1,024Wh | 2,000W | 24.9 lb | $499.99 | $0.49 |
| Bluetti Elite 100 V2 | 33.2 hr | 1,024Wh | 1,800W | 25 lb | $489 | $0.48 |
| EcoFlow Delta 3 Max | 2.8 days | 2,048Wh | 2,400W | 44.8 lb | $879 | $0.43 |
| Jackery Explorer 2000 v2 | 2.8 days | 2,042Wh | 2,200W | 39.5 lb | $899 | $0.44 |
| Anker Solix C2000 Gen 2 | 2.8 days | 2,048Wh | 2,400W | 41.7 lb | $899.99 | $0.44 |
| Bluetti Elite 200 V2 | 2.8 days | 2,073Wh | 2,600W | 53.4 lb | $899 | $0.43 |
| EcoFlow Delta Pro 3 | 5.5 days | 4,096Wh | 4,000W | 113.5 lb | $2,799 | $0.68 |
| Anker Solix F3800 | 5.2 days | 3,840Wh | 6,000W | 132.3 lb | $1,979.99 | $0.52 |
Shaded rows are our picks. Assumed load: A compact dorm-style fridge that pulls 75W when the compressor runs and runs about 35% of the time, with a 300W startup surge.
What a mini fridge really draws
A mini fridge does not run all the time. Its compressor (the pump that moves heat out of the box) switches on, cools the inside, then rests. The share of time it spends running is called the duty cycle.
Our numbers assume a compact dorm-style fridge that pulls 75W while running and runs about 35% of the time. Spread across the day, that averages about 26W. It is like a car in stop-and-go traffic: the engine is strong, but it is only pushing some of the time.
At 26W, a fridge uses about 630 watt-hours in 24 hours. A watt-hour is one watt used for one hour. About 15% of a battery is lost turning its stored power into household AC, so a full day takes roughly 740Wh of battery. That is why the 768Wh Bluetti AC70 lands at 24.9 hours.
One type does not fit this math. Small thermoelectric coolers, the kind with a fan and no compressor, usually run nonstop. They have no duty cycle to lean on, so do not use these runtimes for one.
What makes it run more
The 35% figure is for a fridge in a normal room with the door mostly shut. These raise it:
- A hot room. In a summer garage or a tent, the compressor can run most of the time. Expect far shorter runtimes than the table.
- Opening the door. Each time, cold air falls out and warm air goes in.
- Warm food and drinks. A load of room-temperature cans keeps the compressor on until they cool. Chill them on wall power first if you can.
- No air space. The back and sides shed heat. Pushed tight against a wall, the fridge works harder.
A full fridge holds its cold better than an empty one, so fill spare space with water bottles.
Find your own fridge’s number
Two labels help. The rating plate inside the fridge or on the back lists amps or watts while running. The yellow EnergyGuide sticker lists estimated kilowatt-hours per year. A kilowatt-hour, or kWh, is 1,000 watt-hours. Divide that by 365 to get a daily figure. Our assumed fridge works out to about 230 kWh a year. If yours says 300, add about a third to the battery size.
Size it by the hours you need
Multiply the hours you want by 26W, then divide by 0.85 to cover the 15% loss. Twelve hours needs about 370Wh, so the 300Wh units fall short. Twenty-four hours needs about 740Wh. Forty-eight needs about 1,480Wh, which means the 2,000Wh class.
The startup surge is easy here
When the compressor kicks on, it pulls a short burst of extra power, about 300W in our numbers. Every power station has a surge rating, the most it can give for a moment. The smallest units in the table are rated for 600W of surge, so all 15 models can start a mini fridge.
If the fridge holds medicine
If you are keeping insulin or other medicine cold, ask your pharmacist how long it can safely go without cooling, and size the battery with a wide margin. A station with UPS mode can sit between the wall and the fridge and take over by itself when the power drops, which helps if nobody is home. Three of the four picks list one. The Jackery Explorer 1000 v2 does not. Treat this page as sizing help only.
The picks in detail
Bluetti AC70
- 24.9 hr
- Mini fridge
- $359
- $0.47 per Wh
- 22.5 lb
- Weight
At 768Wh it runs a mini fridge for 24.9 hours, so one charge covers a full day and night. Its 1,500W surge rating is five times the fridge's 300W startup kick. It takes up to 500W of solar, the most of any unit under 1,000Wh. At $0.47 per watt-hour it costs about half as much per hour of cooling as the 300Wh units, which run $0.86 to $1.05.
What fits
- 24.9 hours per charge
- Takes up to 500W of solar
What does not
- 22.5 lb, almost three times the weight of the EcoFlow River 3
- One charge covers a day, not a weekend
Coupon deals well under this price have appeared.
EcoFlow River 3
- 7.9 hr
- Mini fridge
- $239
- $0.98 per Wh
- 7.8 lb
- Weight
For $239 and 7.8 lb, this keeps a mini fridge cold for 7.9 hours. That covers a workday or an overnight power cut, not both. Its 600W surge rating is double the fridge's 300W startup kick. At $0.98 per watt-hour you pay about twice the AC70's rate. EcoFlow's own US store was not listing it at our last check, so confirm you can still buy it.
What fits
- 7.8 lb and $239, the lightest and cheapest unit here
- About 1 hour to recharge from the wall
What does not
- 7.9 hours will not cover a full day
- $0.98 per watt-hour against $0.47 for the AC70
- Stock may be limited
EcoFlow's own US store was not listing this model when we checked, so stock may be limited. Confirm you can still buy it before you plan around it.
Jackery Explorer 1000 v2
- 34.6 hr
- Mini fridge
- $499
- $0.47 per Wh
- 23.8 lb
- Weight
34.6 hours is the longest runtime of the four 1,000Wh units, thanks to a slightly bigger 1,070Wh battery. At 23.8 lb it weighs only 1.3 lb more than the AC70 while running the fridge almost 10 hours longer. At $499 it costs the same $0.47 per watt-hour. Pick it for a two-night stay or for outages that outlast a day. Jackery rates its 4,000 cycles to 70% capacity, not 80%.
What fits
- 34.6 hours per charge
- Lightest 1,000Wh unit at 23.8 lb
What does not
- 400W solar input is the lowest of the 1,000Wh units
- Cycle life is rated to 70% capacity, not 80%
Jackery's list price is $559, and it has sold for less at other retailers. Jackery rates its 4,000 cycles to 70% capacity, not 80%.
Bluetti Elite 200 V2
- 2.8 days
- Mini fridge
- $899
- $0.43 per Wh
- 53.4 lb
- Weight
This one is for a fridge that lives on battery, in a cabin, van or shed. It runs for 2.8 days, takes up to 1,000W of solar, and is rated for 6,000 charge cycles, the most in the table. A cycle is one full drain and refill, so that matters when you do it every day. The trade-off is weight. At 53.4 lb it is the heaviest 2,000Wh unit here.
What fits
- 2.8 days per charge
- 6,000 cycles, the most of any model here
What does not
- 53.4 lb, the heaviest 2,000Wh unit here
- $899 is far more battery than a short outage needs
Bluetti's list price is $1,099.
Verdict
Buy the Bluetti AC70 if you want a mini fridge to ride out a one-day outage or a night at a campsite. Buy the EcoFlow River 3 only if you need something light for a few hours, such as a dorm power cut, and can find it in stock. Step up to the Jackery Explorer 1000 v2 when you need to pass the 24-hour mark, and to the Bluetti Elite 200 V2 when the fridge runs off-grid every day with solar.
How these numbers were worked out. Runtime = battery capacity × efficiency ÷ average watts. We use 85% efficiency for AC outlets and 90% for DC and USB ports, because some energy is lost as heat on the way out. A model is marked "can't run it" when the device needs more watts than the outlet gives, or a bigger startup surge than the unit is rated for. Your own device may draw more or less than our assumed load, so treat these as estimates. Prices were checked on 2026-10-04 and change often. Full method
Related guides
- Best Portable Power Station for 12V Car FridgeA 45-litre 12V compressor fridge uses about 380Wh a day. A 768Wh power station runs one for 1.8 days from the 12V socket. Runtime math for 15 models.
- Best Portable Power Station for Full-Size RefrigeratorA full-size fridge needs about 1,200W to start, which rules out 300W power stations. A 1,000Wh unit runs one for about 14.5 hours. Math for 15 models.
- Best Portable Power Station for Power OutagesA fridge, internet, lights and phones average about 120W. A 2,000Wh power station covers about 14.5 hours. Sizing math and four picks for outages.
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- Best Portable Power Station for Electric CoolerA thermoelectric cooler pulls 50W nonstop, which is 1,200Wh a day and about three times a 12V fridge. Hours per charge for 15 power stations.