- 40W
- while running
- 320Wh
- used over a 8-hour night
- 15 of 15
- models we track can run it
- Best for a long weekendJackery Explorer 1000 v23.0 nights$499Check price
- Best for outages at homeAnker Solix C1000 Gen 22.9 nights$499.99Check price
- Light enough to carry, with a catchJackery Explorer 300 v20.8 nights$299Check price
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Runtime for every model
| Model | Runtime | Capacity | Output | Weight | Price | Per Wh |
|---|---|---|---|---|---|---|
| EcoFlow River 3 | 0.7 nights | 245Wh | 300W | 7.8 lb | $239 | $0.98 |
| Jackery Explorer 300 v2 | 0.8 nights | 288Wh | 300W | 8.2 lb | $299 | $1.04 |
| Anker Solix C300 | 0.8 nights | 288Wh | 300W | 9.1 lb | $249 | $0.86 |
| EcoFlow River 3 Plus | 0.8 nights | 286Wh | 600W | 10.4 lb | $299 | $1.05 |
| Bluetti AC70 | 2.2 nights | 768Wh | 1,000W | 22.5 lb | $359 | $0.47 |
| EcoFlow Delta 3 Plus | 2.9 nights | 1,024Wh | 1,800W | 27.6 lb | $669 | $0.65 |
| Jackery Explorer 1000 v2 | 3.0 nights | 1,070Wh | 1,500W | 23.8 lb | $499 | $0.47 |
| Anker Solix C1000 Gen 2 | 2.9 nights | 1,024Wh | 2,000W | 24.9 lb | $499.99 | $0.49 |
| Bluetti Elite 100 V2 | 2.9 nights | 1,024Wh | 1,800W | 25 lb | $489 | $0.48 |
| EcoFlow Delta 3 Max | 5.8 nights | 2,048Wh | 2,400W | 44.8 lb | $879 | $0.43 |
| Jackery Explorer 2000 v2 | 5.7 nights | 2,042Wh | 2,200W | 39.5 lb | $899 | $0.44 |
| Anker Solix C2000 Gen 2 | 5.8 nights | 2,048Wh | 2,400W | 41.7 lb | $899.99 | $0.44 |
| Bluetti Elite 200 V2 | 5.8 nights | 2,073Wh | 2,600W | 53.4 lb | $899 | $0.43 |
| EcoFlow Delta Pro 3 | 11.5 nights | 4,096Wh | 4,000W | 113.5 lb | $2,799 | $0.68 |
| Anker Solix F3800 | 10.8 nights | 3,840Wh | 6,000W | 132.3 lb | $1,979.99 | $0.52 |
Shaded rows are our picks. Assumed load: A CPAP with the humidifier and heated tube switched off, averaging 40W for an 8-hour night, run from the 12V socket with the maker's DC cable.
How much power a CPAP really uses
The label on a CPAP power brick often says 90W, and that number scares people into buying far more battery than they need. The label shows the most the machine can ever pull. With the humidifier and heated tube switched off, most machines average 30 to 60 watts across a night. The table above assumes 40W.
Over 8 hours, 40W adds up to 320 watt-hours. A watt-hour is just a way of counting energy: one watt, used for one hour. So the question for any power station is simple. How many 320Wh nights fit in the battery, after losses?
A higher pressure setting, a leaky mask, or thin mountain air all make the blower work harder and push that number up.
Use the DC cable, not the wall brick
This is the biggest free win, and it is why our table assumes a DC connection.
A power station stores DC power. When you plug the CPAP’s normal brick into the AC outlet, the station turns DC into AC, and then the brick turns it back into DC. You lose energy in both steps. It is like changing dollars into euros and back again: you pay a fee each way.
A DC cable skips that round trip. In our math, the same battery delivers 90% of its energy over DC and 85% over AC. The larger saving is that the inverter can stay switched off, and an idle inverter draws power all night whether the machine needs it or not.
The cable depends on your machine. ResMed AirSense models run on 24 volts, so they need ResMed’s own DC converter between the 12V socket and the machine. Philips DreamStation models take 12 volts directly through a shielded DC cord. Buy the maker’s cable. A generic one can drop voltage under load and cause the machine to shut off.
Why the humidifier changes everything
Heating water takes far more energy than moving air. Turn on the heated humidifier and heated tube, and the average roughly doubles, to about 85W in our numbers. A battery that lasted two nights now lasts one.
If you can sleep without it for a few nights, switch it off in the machine’s settings and you get the runtimes in this guide. If you cannot, read the humidifier guide and size up.
What to look for
Capacity first. Take 320Wh per night, multiply by the nights you need, then add a quarter as a safety margin. Two nights means roughly 800Wh.
A 12V socket that holds its voltage. Every model in the table has a car-style 12V socket rated for at least 10 amps, which is plenty for a CPAP.
UPS mode, if it lives by your bed. UPS means the station sits between the wall and your machine, and takes over when the grid fails. The switchover time is in milliseconds. A shorter switchover means less chance the CPAP notices and restarts.
Weight, if you carry it. The gap between a 300Wh unit and a 1,000Wh unit is about 15 pounds.
A note on medical need
A CPAP treats sleep apnea, and for most people a missed night is unpleasant but not dangerous. If your doctor has told you that you must not go without it, or you use a BiPAP or ventilator, ask your equipment supplier about backup power made for your device. Treat this guide as sizing help, not medical advice.
The picks in detail
Bluetti AC70
- 2.2 nights
- CPAP, humidifier off
- $359
- $0.47 per Wh
- 22.5 lb
- Weight
At 768Wh the AC70 covers two full nights with a little left over, and it is the cheapest unit here that clears one night with real margin. That margin matters. If your mask leaks or your pressure runs high, a 40W average becomes 50W, and two nights becomes about 1.7. At $0.47 per watt-hour it matches the best-priced 1,000Wh units, and it costs at least $130 less up front.
What fits
- 2.2 nights per charge with the humidifier off
- Refills to 80% in 45 minutes
- $130 less than the cheapest 1,000Wh unit
What does not
- 22.5 lb is a lot to carry far from the car
- 20 ms UPS switchover, where most models here list 10 ms
Coupon deals well under this price have appeared.
Jackery Explorer 1000 v2
- 3.0 nights
- CPAP, humidifier off
- $499
- $0.47 per Wh
- 23.8 lb
- Weight
Three nights on one charge, and at 23.8 lb it is the lightest of the four 1,000Wh units we track. It is barely heavier than the AC70 while holding 300Wh more. It suits a Friday-to-Monday trip with no hookups. Two notes. Jackery rates its 4,000 cycles to 70% capacity, not 80%, and it lists no UPS switchover time, so this is a travel pick, not a bedside one.
What fits
- 3.0 nights per charge with the humidifier off
- Lightest 1,000Wh unit here at 23.8 lb
What does not
- No UPS switchover time listed
- 400W solar input is the lowest in its class
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%.
Anker Solix C1000 Gen 2
- 2.9 nights
- CPAP, humidifier off
- $499.99
- $0.49 per Wh
- 24.9 lb
- Weight
To sleep through a power cut, leave this one plugged in next to the bed. Its 10 ms switchover is as fast as any model in the table, which gives your machine a good chance of carrying on without restarting when the grid drops. It refills in 49 minutes once power returns, and it gives 2.9 nights if the outage drags on.
What fits
- 10 ms UPS switchover
- Full recharge from the wall in 49 minutes
What does not
- About a pound heavier than the Jackery for nearly the same runtime
- $499.99, about $11 more than the Bluetti Elite 100 V2, which also lists 10 ms
Anker's list price is $599.99. It has sold for under $430 at other retailers.
Jackery Explorer 300 v2
- 0.8 nights
- CPAP, humidifier off
- $299
- $1.04 per Wh
- 8.2 lb
- Weight
At 8.2 lb this is the lightest unit here that reaches 6.5 hours at 40W, but that is not a full 8-hour night. It works if your machine averages closer to 30W, which is common at lower pressures, or if you can recharge every day. At $299 it costs $1.04 per watt-hour, more than double the AC70's rate, so you are paying for low weight.
What fits
- 8.2 lb
- 10 ms UPS switchover
What does not
- 6.5 hours at 40W falls short of a full night
- $299 is only $60 less than the AC70, which lasts 2.2 nights
- Cycle life is rated to 70% capacity, not 80%
This model replaced the Explorer 300 Plus. Jackery rates its 4,000 cycles to 70% capacity, not 80%.
Verdict
Buy the Bluetti AC70 if two nights covers your trips. Spend about $140 more on a 1,000Wh model if you camp for long weekends or want outage cover at home: the Jackery Explorer 1000 v2 for travel because it is lightest, the Anker Solix C1000 Gen 2 for the bedside because it lists a 10 ms UPS switchover and the Jackery lists none. Skip the 300Wh class unless weight rules everything else out, and check your machine's real draw first.
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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