About
About Willrun
Willrun answers one question: will this power station or generator run this appliance, and for how long? Every answer is calculated from the manufacturer's published watts and watt-hours, and the source is linked on the page.
What the site covers
- Portable power stations matched against common appliances, from fridges and window AC units to routers and laptops, with a runs, surge-risk or won't-run verdict and a runtime.
- Generators and 30 amp inlet math for home backup.
- CPAP and BiPAP runtimes by machine and setting (no humidifier, humidifier, heated tube), on AC and on a DC converter.
- Outage planners and buying guides that show the deciding spec for each job.
How the numbers are made
| Step | What Willrun does |
|---|---|
| Specs | Capacity, continuous and surge watts, UPS switchover and appliance draw come from the manufacturer's spec page, manual or ENERGY STAR listing named on each row. If a maker did not publish a number, the page says so instead of guessing. |
| Usable capacity | Nameplate watt-hours × 0.85, an allowance for inverter loss. It is a Willrun assumption, not a measured efficiency for any model. |
| Inverter idle draw | An inverter uses power just to stay on. Willrun adds about 15 W, the figure BLUETTI uses for its AC180, so runtime on AC = Wh × 0.85 ÷ (average W + 15). At light loads, like a CPAP with the heater off, this overhead decides the answer. |
| Surge | Motor and compressor loads are checked against the published surge rating. Without a published startup figure the verdict is runs with surge risk, not a guess. |
| DC power | CPAP pages show nights on the maker's DC converter separately, as a best case that skips the inverter. |
The full formulas, duty-cycle rules and verdict definitions are on the methodology page.
Who runs Willrun
Willrun (willitrunpower.com, also called Will It Run? Power Stations) is published by EYEVUE Ventures, an independent publisher. It is not owned by or affiliated with any power station, generator, solar or CPAP manufacturer, and no manufacturer reviews pages before they are published.
How the site makes money
Some "Check price on Amazon" buttons are affiliate links. As an Amazon Associate we earn from qualifying purchases. If Willrun joins other affiliate programs, they will be named on the affiliate disclosure page. Affiliate links and any labeled sponsor placement never change a verdict, a runtime or a ranking.
Medical devices
CPAP, BiPAP and other medical device pages are planning estimates from published specs, not medical advice. Draw varies with pressure, humidifier and tube settings, altitude and mask fit. Before relying on any battery, power station, inverter or generator for a medical device, confirm approved power sources with the device maker and your doctor or equipment supplier, and keep a backup plan. Some station makers, including EcoFlow, say their products are not intended for life-sustaining equipment. In an emergency, call 911.
Contact and corrections
Questions, corrections and partnership inquiries: eyevueventures@gmail.com. If a spec is wrong or a maker has updated a number, send the page URL and the source and we will fix it. How we handle data is on the privacy policy page.