Direct answer: Plan 24-hour medical-equipment backup conservatively with runtime math, device approval, redundancy, and an outage contingency plan.
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Power Station for Medical Equipment That Must Run 24 Hours
Safety first: a portable power station is not automatically an approved medical-device backup. The FDA’s medical-device disaster guidance recommends checking the device manual, manufacturer, supplier, and emergency plan. Ready.gov’s power-outage guidance also recommends planning ahead for power-dependent medical equipment. This page is a planning framework, not medical or electrical advice.
Size from the measured load
Confirm the device’s measured watts, startup surge, required waveform, battery/charger input, alarm behaviour, and whether the manufacturer permits a portable station or UPS. A first-pass estimate is required battery Wh ≈ measured watts × hours ÷ total system efficiency. Add reserve for conversion losses, temperature, battery ageing, and uncertainty; do not treat the nameplate estimate as a guaranteed 24-hour runtime.
For a 24-hour requirement, plan a second charging path, spare approved battery, or professionally designed backup rather than relying on one untested unit. Test the complete device-and-power-station setup under supervision before an outage, including transfer time, alarms, restart behaviour, and nighttime conditions.
For CPAP equipment, a manufacturer-approved DC cable may reduce inverter losses, but it still must be compatible with that device. For oxygen concentrators, ventilators, dialysis equipment, or any life-sustaining device, ask the clinician, durable-medical-equipment supplier, and device manufacturer about continuity requirements and evacuation or emergency-service plans. Never improvise a connection to household wiring or a transfer switch.
Sources and limits
These sources support emergency planning and device-safety checks; they do not certify any particular power station for any medical device.