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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 one night to over a month, depending on the size you buy. Here's the runtime math and our picks.

Updated July 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~21 nights of CPAP$449

Best for

Anyone who wants real margin — a full week of nightly 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 21 hours of continuous CPAP runtime — call it a full week of 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 that still comfortably covers one full 8-hour night on a CPAP with margin to spare (about 6 hours of runtime). Good enough if outages in your area are rare and short — 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~40+ nights of CPAP$749

Best for

Multi-week 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 over a month of nightly CPAP use by itself.

Check battery price ↗View Jackery panel ↗
4
EcoFlow

EcoFlow DELTA Mini (1kWh Battery)

1.008 kWh~21 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. 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?
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. Even the smallest 288Wh unit on this list covers a full 8-hour night with margin. Larger units cover a week or more 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.

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