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CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified

CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector

Bottom line: The CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector is a specs-and-price decision rather than a crowd-consensus one in the power protection category, priced around $490.95 on Amazon as of 2026-10-21 16:29 UTC. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

$490.95

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Buy on Amazon — $490.95 Also on eBay → Compare to similar power protection

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ HOSPITAL-GRADE ISOLATION TRANSFORMER: Minimizes current leakage and eliminates line noise

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

The CyberPower M550L medical-grade UPS delivers clean, consistent backup power to sensitive medical equipment in hospitals and healthcare facilities. Designed for use in patient care vicinities, the M550L has been tested to meet all UL 60601-1 requirements, and includes hospital-grade plugs and outlets. The M550L also includes a built-in isolation transformer to minimize the current leakage and eliminate line noise, a tip-resistant mini-tower design, replaceable batteries, and a sealed, spray-resistant LCD panel. NOTE: This UPS is not intended for use in critical care or life support…

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SpecPicks Verdict

SpecPicks scored CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. Compare with similarly-priced alternatives in the power protection category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 550VA/440W Medical-Grade Uninterruptible Power Supply (UPS): Uses simulated sine wave technology to provide battery backup power to safeguard
  • 4 HOSPITAL-GRADE BATTERY BACKUP & SURGE PROTECTED OUTLETS: Designed for healthcare facilities, the M550L meets all UL 60601-1 requirements necessary for in patient care environments
  • MULTIFUNCTION LCD PANEL: Sealed, spray-resistant screen displays immediate, detailed information on battery and power conditions, including: estimated runtime, battery capacity, load capacity, etc.
  • HOSPITAL-GRADE ISOLATION TRANSFORMER: Minimizes current leakage and eliminates line noise
  • 3-YEAR WARRANTY – INCLUDING THE BATTERIES; $400,000 Connected Equipment Guarantee and FREE PowerPanel Business Edition Management Software (Download)

Full Specifications

BrandCyberPower
ColorWhite
Runtime25 minutes
Voltage120 Volts
Wattage440 watts
Amperage6 Amps
Unit Count1.0 Count
Form FactorMini-Tower
Model NumberM550L
Input Voltage120 Volts (AC)
Maximum Power440 Watts
Built-In MediaM550L^user manual
Connector TypeNEMA 5-15P-HG (power input), 5-15R-HG (power output)
Item Type NameCyberPower M550L Medical-Grade UPS System, 550VA/440W, 4 Outlets, AVR, Tower
Output Voltage120 Volts (AC)
Output Wattage440 Watts
Frequency Range57 Hz – 63 Hz
Item Dimensions13.7 x 5.4 x 6.4 inches
Mfr Part NumberM550L
Power Plug TypeType B - 3 pin (North American)
Full listing titleCyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified

Ready to buy?

CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $490.95

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified
$490.95
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