Battery Backup for Houston Imaging Centers and Diagnostic Labs
Most small imaging centers and diagnostic labs in Houston are not one load. They are three very different ones sharing a roof: a scanner suite that draws power on a scale no home battery is built for, a lab refrigerator that draws almost nothing but cannot be allowed to warm up, and a front desk, schedule and reporting system that quietly decides whether the day continues.
A battery handles two of those three well. It does not handle the first one at all, and I'd rather say that up front than let a quote imply otherwise.
Key Takeaways
- Eos plans are residential-scale systems: one controller rated 11.5 kW continuous and 17.1 kW surge, with capacity added in 9 kWh modules (8.76 kWh usable each). That fits the lab refrigerator, IT and front office, not a full MRI suite.
- One MRI manufacturer's published site requirements list a magnet at 480 V, 3-phase, 125 A (about 100 kVA) and a chiller at 480 V, 3-phase, 100 A (about 47 kVA while running) (FONAR site requirements). That is engineer territory.
- Federal lab rules require a lab to define, monitor and document the storage conditions for specimens and reagents, including protection from electrical interruptions that could affect results (42 CFR 493.1252).
- Customers nationally averaged 11 hours without electricity in 2024, with Hurricane Beryl among the events behind 80 percent of those hours (U.S. Energy Information Administration, 2025).
Why is an imaging center different from a regular clinic?
Because the heaviest equipment is also the least portable idea in the building. We have already covered the shared problems of a walk-in practice: the record system, refrigeration and lighting. Our posts on urgent care clinics and medical and dental practices walk through those. Physical therapy and chiropractic clinics are a lighter version of the same story, and dialysis and surgery centers sit at the regulated end of it.
This post is about what is left over: the diagnostic equipment, the lab bench, and the appointment book that depends on both. Hypotheses about your own site are exactly that, hypotheses, until an electrician walks the panel.
What about the MRI and the big scanners?
Be honest here: an MRI suite is not a battery project at Eos scale. FONAR's published site requirements for one of its systems list the magnet at 480 V, 3-phase, 125 A, about 100 kVA, and a chiller at 480 V, 3-phase, 100 A, about 47 kVA while running (FONAR). That is one manufacturer and one model, and other scanners differ. Still, compare it with a controller rated 11.5 kW continuous. The gap is not a sizing tweak.
There is a second, more reassuring point. A power outage by itself does not instantly ruin an MRI magnet. MRI Questions notes that in the superconducting state the windings carry current without an external supply, and that if power or the cryocooler fails, magnets "may remain cold for days," depending on the design and helium inventory (MRI Questions, What is a quench?). It lists chronic low helium, cryogen leaks and rising ambient temperature as quench triggers, not a short outage alone.
So the useful question for an MRI site is not "can a battery run the scanner." It is: who is notified when cooling or power drops, who can restore it, and how long is the window? That belongs to your scanner vendor and a qualified electrical engineer. I could not find a source that gives one safe number for every machine, so I am not offering one.
Can a battery run X-ray or ultrasound?
It depends entirely on the unit, and I have not verified a general figure. I could not find a manufacturer document that states a single power draw for small ultrasound carts, and the X-ray data I did find varied by model. The practical way to answer it is to read the nameplate or installation manual for each unit, then add the numbers up.
What I can say from the sizing side: a unit that plugs into a standard circuit and runs in short bursts is a reasonable candidate for a dedicated, battery-backed circuit. A fixed room with a high-power generator and a dedicated feeder is not. Mobile and portable systems often run from a standard outlet or even their own battery, which is a different conversation from a ceiling-mounted room.
Whichever you have, the device's own manufacturer sets the requirements. FONAR's published sheet shows how specific they get, down to phase and amperage.
What does the lab have to protect?
The cheapest equipment in the building is often the most regulated. Under the federal clinical laboratory rule, a lab has to define criteria for the conditions that are essential for proper storage of reagents and specimens, and for accurate and reliable test system operation, then monitor and document them. The rule names temperature and protection of equipment from electrical current fluctuations or interruptions that could affect patient results (42 CFR 493.1252). Testing is also to be performed following the manufacturer's instructions.
In plain terms: if your reagent insert says refrigerate, a dark refrigerator is a documented problem, not an inconvenience. A refrigerator or specimen freezer is a small load. It is also the one where a battery earns its place, because the loss is not a delayed appointment, it is a result you cannot report. Our pharmacy and urgent care posts cover the cold chain from the medication side.
Which loads fit, and which need an engineer?
A rough split, based on the Eos controller and module numbers above. Confirm every item against your own nameplates.
| Load | Fits one controller? | Notes |
|---|---|---|
| Specimen and reagent refrigerators | Yes | Small, steady, and the highest value per watt |
| Network, servers, reporting workstations | Yes | Pair with a small UPS for clean shutdown |
| Reception, scheduling, lighting, phones | Yes | Run as a separate backed-up circuit |
| One portable or plug-in imaging unit | Possibly | Needs a nameplate check and a dedicated circuit |
| Full building HVAC | Not on one controller | Cool one room instead of the building |
| MRI, CT, fixed X-ray rooms | No | Vendor and electrical engineer decision |
The first three rows are the real opportunity. The last row is where I'd tell an owner to call their equipment vendor first, not a battery installer. Our general explainer on commercial versus residential battery sizing in Texas shows how that line is drawn, and the commercial battery backup overview covers where multiple controllers come in.
Compressor motors in refrigerators also draw more at the instant they start than while running. That inrush is why you size to the start, not the nameplate average.
What do you actually lose when the schedule goes dark?
A lot of the damage is not clinical. A center that cannot open cannot see its booked patients, and the studies, referrals and reports behind them stall. Our post on the cost of a power outage to a Texas business lays out the cost categories. I am not putting a dollar figure on an imaging center here, because I do not have a verified one.
What I can anchor is frequency of exposure. Customers across the United States averaged 11 hours without electricity in 2024, and the EIA attributes 80 percent of those hours to major events, mainly Hurricanes Beryl, Helene and Milton (U.S. Energy Information Administration, 2025). Houston is on the Gulf Coast, so the hurricane season is the exposure to plan around, and the ERCOT grid history covers the rest.
Where should a center start?
In order, and without buying anything first:
- List every unit that holds a specimen, reagent or result, and write down its storage requirement from the insert or manual.
- Ask your scanner vendor for its power and cooling requirements and what its remote monitoring alerts on.
- Have an electrician separate the panel into a clinical core, large mechanical loads and everything else.
- Size the battery to the clinical core only. Buy hours with more modules, not by pushing mechanical loads onto one controller.
- Document it. For a lab, the record is half the compliance story.
What to do next
If your site is a small lab, a reading room, a plain-film suite or an office that supports a larger imaging partner, a single controller with a few modules is a realistic way to protect specimens, data and scheduling. If your site has a fixed MRI or CT, start with the vendor and an engineer, and treat a battery as a possible support for the surrounding office, not the scanner.
Or call Eos at 833-989-3737 to talk through your setup with an installer.
Frequently asked questions
Can a home battery run an MRI?
No. Published site requirements for one MRI system list a 480 V, 3-phase magnet supply at about 100 kVA and a separate 480 V chiller at about 47 kVA while running (FONAR). A controller rated 11.5 kW continuous is not in that range. Treat MRI backup as a vendor and engineering project.
Will an MRI magnet be damaged by a short outage?
Not necessarily. MRI Questions says magnets may remain cold for days if power or the cryocooler fails, depending on design and helium inventory (MRI Questions). Ask your scanner vendor what your system tolerates and what its monitoring alerts on.
Does the law require a diagnostic lab to have backup power?
I did not find a rule requiring a generator or battery. The federal lab rule does require a lab to define, monitor and document specimen and reagent storage conditions, including protecting equipment from electrical interruptions that could affect results (42 CFR 493.1252). How you meet that is your decision.
What fits on one Eos controller at an imaging or lab site?
Refrigeration, network and reporting systems, reception and lighting, and possibly one plug-in imaging unit after a nameplate check. Fixed imaging rooms and building-wide HVAC need a larger design or a separate engineered system. For related settings, see veterinary clinics and small data rooms.
Reflects Eos Backup and Battery specifications as of November 2026. Eos plans are residential-scale systems. No runtime or clinical outcome is promised, and equipment loads and electrical code should be confirmed with the equipment vendor and a licensed professional.