Medical devices in an outage: build a plan beyond one home battery

Start with the care plan, not a battery brochure

Make one row for every power-dependent medical device. Record the manufacturer and model, normal power source, plug type, listed electrical input, internal-battery duration, recharge time, alarms, safe operating conditions and supplies. Add the device manufacturer, distributor, clinician, pharmacy, electric utility and two personal contacts. Keep a printed copy where another person can find it.

Ready.gov tells households to make alternate plans for power-dependent medical devices and medicine refrigeration. [1] FDA advises reading the device instructions or contacting its manufacturer or distributor to learn whether it can use batteries or generator power. [2] Those instructions take priority over a generic equipment estimate. Origin can review an electrical backup scope, but it does not prescribe a medical plan or certify that a device is safe on a proposed system.

Measure the right electrical demand

Ask a qualified reviewer to verify the device load from the label and manufacturer documentation. Do not use a guessed wattage for life-safety planning. Record both continuous demand and any startup, heating or compressor demand. Include supporting equipment such as humidifiers, chargers, communication gear, refrigeration and climate control only when the care or device plan calls for them.

Then make a separate household-load list. A refrigerator, air conditioner, well pump or microwave can compete with the medical circuit for available output. The backup design should show what can operate at the same time, which circuits are backed up and how optional loads are controlled. A large energy figure does not prove that the inverter can start every connected load, and a high power rating does not establish how long stored energy lasts.

Use a written energy budget—and label it illustrative

A first-pass worksheet multiplies each load in kilowatts by expected hours to estimate kilowatt-hours. For example only, a 100-watt device running continuously for 12 hours uses 1.2 kWh before conversion losses or other loads: 0.1 kW × 12 hours. That arithmetic is not a runtime promise. Actual equipment draw, battery reserve, state of charge, temperature, degradation, conversion losses and simultaneous loads change the result.

Ask the installer to show usable—not merely nameplate—energy, continuous and surge output, reserve settings, transfer behavior and the assumptions behind any duration statement. Retain margin for uncertainty. If the plan depends on compatible solar recharging, document the specific inverter and storage configuration; DOE notes that ordinary grid-tied panels generally switch off during a grid outage. [4]

Plan every handoff before the outage

Write down what happens when utility power fails, when the home system transfers, when an internal device battery becomes the active source, when the home battery reaches its reserved threshold and when the household leaves. Identify who checks the equipment, transports the person and device, and confirms that the fallback location has compatible power. Practice the sequence without interrupting required care.

FDA recommends notifying the electric utility and fire department about power-dependent devices and checking device settings after power is restored because some equipment may reset. [2] Ask the utility what programs or notifications are actually available for the service address; enrollment does not guarantee uninterrupted or priority restoration. Keep chargers, cables, adapters and labeled supplies together, and never connect wet equipment or cords.

Keep medicine, communications and transport in the same record

Power is only one dependency. Document any temperature-sensitive medicine instructions from the pharmacist or manufacturer, the safe temperature range, the available thermometer and the point at which medicine must be replaced. Record non-electric communication options, accessible transportation and at least two destinations that the care team considers appropriate.

Keep important numbers on paper as well as in a phone. The FDA outage workbook is structured around device information, supplies, contacts and actions, which makes it a practical companion to the electrical plan. [3] Review the record when equipment, prescriptions, caregivers, phone service or the home electrical system changes. A system test is not a substitute for a relocation option when an outage may outlast stored energy.

Compare equipment only after the safety plan exists

For a battery proposal, request the backed-up panel or circuit list, usable capacity, output limits, compatible charging sources, monitoring method, reserve setting, transfer behavior and complete installed scope. For a generator alternative, add fuel, placement, transfer equipment, maintenance and carbon-monoxide safety to the comparison. Keep portable equipment outdoors and away from doors, windows and vents, and follow current official and manufacturer guidance.

Origin can produce a property-specific quote for eligible service addresses. Bring the device power documentation and a separate household-load list, but keep medical decisions with the clinician and device manufacturer. The useful outcome is a layered plan with written limits and a practiced fallback—not a claim that one product makes the home outage-proof.

Primary sources

1. Ready.gov: Power Outages

   Checked October 8, 2026 for emergency planning, medicine refrigeration and alternate plans for power-dependent medical devices. It does not certify any home backup system for medical use.

2. FDA: Tips About Medical Devices and Natural Disasters

   Checked October 8, 2026 for device-specific preparation, manufacturer instructions, utility notification and post-outage setting checks.

3. FDA: Home Use Devices—Power Outage Planning

   Checked October 8, 2026 for the FDA planning workbook covering device information, supplies, contacts and actions during an outage.

4. U.S. Department of Energy: Solar and Resilience Basics

   Checked October 8, 2026 for the distinction between ordinary grid-tied solar and a properly configured solar-plus-storage system that can operate during an outage.

Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.

Related guidance

• Model a household backup-load scenario
• Read battery kW and kWh correctly
• Review home battery installation
• Plan battery and generator coexistence