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

Name: CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified
Brand: Unbranded
SKU: B0797H5W48
Price: 490.95 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$490.95

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*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.

Bottom line: The CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified is a niche pick — read recent reviews before buying in the power protection category, priced around $490.95. Compare close alternatives before committing.

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. The M550L medical-grade UPS is covered by a three-year warranty (including…

SpecPicks Verdict

SpecPicks scored CyberPower M550L Medical-Grade UPS Battery Backup and Surge… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the power protection category. Compare with similarly-priced alternatives in the power protection category before committing. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ HOSPITAL-GRADE ISOLATION TRANSFORMER: Minimizes current leakage and eliminates line noise
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

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

Brand	CyberPower
Color	White
Runtime	25 minutes
Voltage	120 Volts
Wattage	440 watts
Amperage	6 Amps
Unit Count	1.0 Count
Form Factor	Mini-Tower
Model Number	M550L
Input Voltage	120 Volts (AC)
Maximum Power	440 Watts
Built-In Media	M550L^user manual
Connector Type	NEMA 5-15P-HG (power input), 5-15R-HG (power output)
Item Type Name	CyberPower M550L Medical-Grade UPS System, 550VA/440W, 4 Outlets, AVR, Tower
Output Voltage	120 Volts (AC)
Output Wattage	440 Watts
Frequency Range	57 Hz – 63 Hz
Item Dimensions	13.7 x 5.4 x 6.4 inches
Mfr Part Number	M550L
Power Plug Type	Type B - 3 pin (North American)

Ready to buy?

CyberPower M550L Medical-Grade UPS Battery Backup and Surge Protector, 550VA/440W, 4 Outlets, AVR, Tower, UL Certified is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.