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Best Solar Generator for a CPAP Machine During an Outage (2026)

A power outage shouldn't mean a night without your CPAP. A solar-rechargeable battery power station — charged ahead of time or topped off with a panel — can run a typical CPAP for anywhere from about six hours to roughly five nights in a row, depending on the size you buy. Here's the runtime math and our picks.

Updated August 2026·5 min read·Affiliate disclosure

How much power does a CPAP actually use?

Most CPAP machines draw around 40W with a heated humidifier running, less if you run without heat or on a lower humidity setting. That's a small load compared to what these units are built for — a fridge or space heater draws 5–35× as much — which is why even a budget battery covers a full night with room to spare.

Why not just use a gas generator?

A gas generator has to run outdoors because of carbon monoxide, which means a cord running through a window or door and checking on it through the night. A battery power station has no combustion or exhaust, so it can sit on the nightstand next to the CPAP itself — silent, and safe indoors.

Picks by how long you need to run

1
Jackery

Jackery Explorer 1000 v2 (1kWh Battery)

1.07 kWh~3 nights of CPAP$449

Best for

Anyone who wants real margin — about three nights of CPAP use before it needs a recharge

At 40W, a CPAP sips power compared to what this battery is built for. 1,000Wh gives you roughly 23 hours of continuous CPAP runtime — call it about three 8-hour nights — with enough left over to also run a phone charger, a lamp, and a router. One day of sun on the included panel puts you back to full.

Check battery price ↗View Jackery panel ↗
2
Jackery

Jackery Explorer 300 Plus (288Wh Battery)

0.288 kWh~1 nights of CPAP$299

Best for

Budget backup for a single overnight outage

The smallest, cheapest unit on this list — it runs a CPAP for about 6 hours, just under a full 8-hour night. Good enough if outages in your area are rare and short, or if you skip the heated humidifier setting, which stretches runtime further. Recharge it during the day and you're covered again by nightfall.

Check battery price ↗View Jackery panel ↗
3
Jackery

Jackery Explorer 2000 v2 (2.04kWh Battery)

2.042 kWh~5 nights of CPAP$749

Best for

Extended outages, or running a CPAP plus a fridge and other medical devices

Overkill for a CPAP alone, but the right call if you're also keeping a fridge running for medication, or you live somewhere multi-day outages are common. 2,042Wh covers roughly five nights of CPAP use by itself — longer if you skip the humidifier or top it off with a panel during the day.

Check battery price ↗View Jackery panel ↗
4
EcoFlow

EcoFlow DELTA Mini (1kWh Battery)

1.008 kWh~3 nights of CPAP$499

Best for

Buyers who prefer EcoFlow or already own an MC4 panel

Matches the 1,000Wh tier's CPAP runtime almost exactly — about three nights per charge. Its MC4 solar input works with generic third-party panels, so it's a good pick if you don't want to be locked into one brand's accessories.

Check battery price ↗View Renogy panel ↗

Frequently Asked Questions

Will a solar generator keep my CPAP running all night during a power outage?
For most nights, yes. A CPAP machine draws roughly 30–60W depending on the model and whether the heated humidifier is running — call it 40W as a typical figure. The smallest 288Wh unit on this list covers about 6 hours, just under a full 8-hour night; a 1,000Wh unit covers a full night with room to spare, and the largest unit on this list stretches to roughly five nights between recharges.
Do I need a special inverter or adapter for a CPAP machine?
No. Plug the CPAP's standard power supply into one of the unit's AC outlets, the same way you would at a wall outlet at home. If your CPAP uses a DC adapter, some units also offer a 12V or USB-C PD port that can skip the inverter entirely for slightly better efficiency, but it isn't required.
Is battery backup safer than a gas generator for medical equipment?
For anything you need to keep running near where you sleep, yes. A gas generator produces carbon monoxide and must run outdoors, which means running an extension cord and checking on it periodically overnight. A battery power station has no combustion or exhaust, so it's safe to keep in the same room as the CPAP.
How do I know exactly how many watts my CPAP uses?
Check the label on the power supply brick (not the machine itself) — it lists rated wattage or voltage × amperage. A heated humidifier setting adds the most draw; running without heat or with a lower humidity setting extends runtime further than the estimates on this page, which assume the humidifier is on.

Sources

Not the same as plug-in solar

These units don't connect to your home's wiring, so they don't require a plug-in solar law to use anywhere in the US. See our solar backup power guide for full runtime charts across more devices.

Further reading