- 150W
- while running, 350W to start
- 3,600Wh
- used over a full day
- 15 of 15
- models we track can run it
- Best for short power cutsEcoFlow River 3 Plus1.6 hr$299Check price
- Best for long outagesEcoFlow Delta 3 Max11.6 hr$879Check price
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Runtime for every model
| Model | Runtime | Capacity | Output | Weight | Price | Per Wh |
|---|---|---|---|---|---|---|
| EcoFlow River 3 | 1.4 hr | 245Wh | 300W | 7.8 lb | $239 | $0.98 |
| Jackery Explorer 300 v2 | 1.6 hr | 288Wh | 300W | 8.2 lb | $299 | $1.04 |
| Anker Solix C300 | 1.6 hr | 288Wh | 300W | 9.1 lb | $249 | $0.86 |
| EcoFlow River 3 Plus | 1.6 hr | 286Wh | 600W | 10.4 lb | $299 | $1.05 |
| Bluetti AC70 | 4.4 hr | 768Wh | 1,000W | 22.5 lb | $359 | $0.47 |
| EcoFlow Delta 3 Plus | 5.8 hr | 1,024Wh | 1,800W | 27.6 lb | $669 | $0.65 |
| Jackery Explorer 1000 v2 | 6.1 hr | 1,070Wh | 1,500W | 23.8 lb | $499 | $0.47 |
| Anker Solix C1000 Gen 2 | 5.8 hr | 1,024Wh | 2,000W | 24.9 lb | $499.99 | $0.49 |
| Bluetti Elite 100 V2 | 5.8 hr | 1,024Wh | 1,800W | 25 lb | $489 | $0.48 |
| EcoFlow Delta 3 Max | 11.6 hr | 2,048Wh | 2,400W | 44.8 lb | $879 | $0.43 |
| Jackery Explorer 2000 v2 | 11.6 hr | 2,042Wh | 2,200W | 39.5 lb | $899 | $0.44 |
| Anker Solix C2000 Gen 2 | 11.6 hr | 2,048Wh | 2,400W | 41.7 lb | $899.99 | $0.44 |
| Bluetti Elite 200 V2 | 11.7 hr | 2,073Wh | 2,600W | 53.4 lb | $899 | $0.43 |
| EcoFlow Delta Pro 3 | 23.2 hr | 4,096Wh | 4,000W | 113.5 lb | $2,799 | $0.68 |
| Anker Solix F3800 | 21.8 hr | 3,840Wh | 6,000W | 132.3 lb | $1,979.99 | $0.52 |
Shaded rows are our picks. Assumed load: A desktop 3D printer averaging 150W once the bed is hot, with a 350W peak while it heats up.
The real job is saving a print
A big print can take many hours. If the power cuts out partway, even for a second, the printer stops. Some printers can pick up where they stopped, but the bed cools while the power is off and the part can come loose. Often the print is scrap.
The fix is to put a power station between the wall and the printer. Wall power passes through the station to the printer. When the grid drops, the battery takes over. This is called a UPS, short for uninterruptible power supply. Think of a relay runner already jogging beside the first one, ready to take the baton.
So you size the station for the length of the power cut, not the length of the print.
Switchover time matters most
The station needs a moment to switch from wall power to battery. That gap is measured in milliseconds, which are thousandths of a second. Shorter is safer, because the printer has to ride through the gap without resetting.
Nine of the 15 models list 10 ms. The Bluetti Elite 200 V2 lists 15 ms. The EcoFlow River 3, Bluetti AC70, Jackery Explorer 2000 v2 and Anker Solix F3800 list 20 ms. The Jackery Explorer 1000 v2 lists no UPS switchover time on its product page, so do not buy it for this job.
No spec sheet can promise that your printer rides through the gap. So check it yourself. Start a short print, unplug the station from the wall, and see whether the printer keeps going.
What a printer draws
A desktop 3D printer has two heaters: a small one in the nozzle and a large one under the bed. At the start of a print both run flat out, and the draw peaks near 350W. Once the bed is hot, the heaters switch on and off to hold temperature, and the average falls to about 150W.
A watt-hour counts energy: one watt, used for one hour. An hour of printing at 150W uses 150 watt-hours.
Hours of printing on battery
In our math, a station delivers 85% of its energy through the AC outlet. The 300Wh-class units give 1.4 to 1.6 hours. The 768Wh unit gives 4.4 hours. The 1,000Wh class gives 5.8 to 6.1 hours, and the 2,000Wh class gives 11.6 to 11.7. The cheapest way past 4 hours is the Bluetti AC70 at $359, but it lists a 20 ms switchover, double that of the three picks.
These hours start when the grid drops. Once the power returns, the station refills from the wall. Check that it is full again before you start the next long print.
Be careful with the three small units that put out 300W. The table shows they can run the printer, because their 600W surge rating covers the 350W peak. But a surge rating is for brief bursts, and a bed takes minutes to heat. If the power fails during heat-up, they may shut off. The 600W River 3 Plus does not have that problem.
What changes the number
The printer itself matters most. A larger printer has a bigger bed to heat. An enclosed printer may add a heater for the chamber. Both draw more than our 150W. Check the watts on the label of your printer or its power supply, and compare that with the station’s output.
The material matters too. Plastics that need a hotter bed, such as ABS, keep the heater on more than PLA does.
Printing with no wall power at all is a different job. A 10-hour print uses about 1,500Wh at the printer, which takes a 2,000Wh unit.
The picks in detail
Anker Solix C1000 Gen 2
- 5.8 hr
- Desktop 3D printer
- $499.99
- $0.49 per Wh
- 24.9 lb
- Weight
It lists a 10 ms switchover, the shortest figure any of the 15 models gives, and then carries a print for 5.8 hours on battery. Its 2,000W output is the most in the 1,000Wh class, so a larger printer or a second machine fits too. It refills from the wall in 49 minutes, so it is ready again soon after the power returns. It costs $499.99, or $0.49 per watt-hour.
What fits
- 10 ms switchover
- 5.8 hours of printing on battery
- 2,000W output has room for a bigger printer
What does not
- The Bluetti Elite 100 V2 gives the same 5.8 hours and 10 ms for $11 less
- 24.9 lb
Anker's list price is $599.99. It has sold for under $430 at other retailers.
EcoFlow River 3 Plus
- 1.6 hr
- Desktop 3D printer
- $299
- $1.05 per Wh
- 10.4 lb
- Weight
For flickers and short cuts, this 10.4 lb unit is enough. It lists the same 10 ms switchover as the larger picks and prints for 1.6 hours on battery. Its 600W output covers the 350W heat-up peak with room to spare. The three 300W units only cover that peak with their surge rating, which is meant for brief bursts. It costs $299, which is EcoFlow's regular price.
What fits
- 10 ms switchover
- 600W output covers the 350W heat-up peak
- 10.4 lb, small enough to sit by the printer
What does not
- 1.6 hours will not outlast a long outage
- The Bluetti AC70 prints for 4.4 hours for $60 more
This is EcoFlow's regular price. It has sold for far less during sales.
EcoFlow Delta 3 Max
- 11.6 hr
- Desktop 3D printer
- $879
- $0.43 per Wh
- 44.8 lb
- Weight
11.6 hours on battery carries a print through an outage that lasts most of a night. It lists a 10 ms switchover. Of the other 2,000Wh units, only the Anker Solix C2000 Gen 2 matches that. The Jackery lists 20 ms and the Bluetti 15 ms. At $879 it is the lowest price in its class, or $0.43 per watt-hour. It weighs 44.8 lb, which matters little for a unit that stays under the bench.
What fits
- 11.6 hours of printing on battery
- 10 ms switchover
- $0.43 per watt-hour
What does not
- 44.8 lb
- Far more battery than a flicker needs
EcoFlow's list price is $1,199. The Delta 3 Max Plus is a separate, pricier model.
Verdict
Buy the Anker Solix C1000 Gen 2 to protect most desktop printers. It lists a 10 ms switchover and carries a print through 5.8 hours. Pick the EcoFlow River 3 Plus if your power cuts are short and space is tight. Choose the EcoFlow Delta 3 Max if cuts where you live run for hours. Skip the Jackery Explorer 1000 v2 for this job, since it lists no switchover time. Whatever you buy, try it with a short print before you trust it with a long one.
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
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