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Eaton Tripp Lite AVR550U 550VA UPS 300W Battery Backup Surge Protector AVR
TRIPP LITE

Eaton Tripp Lite AVR550U 550VA UPS 300W Battery Backup Surge Protector AVR

Bottom line: The Eaton Tripp Lite AVR550U 550VA UPS 300W Battery Backup Surge ($96.99 on Amazon as of 2026-10-20 16:29 UTC): 550VA/300W runs an efficient desktop PC plus small monitor about 32 minutes; main trade-off: 300W ceiling rules out gaming rigs and modern GPUs.

$96.99

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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 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 550VA/300W runs an efficient desktop PC plus small monitor about 32 minutes
  • ✓ AVR corrects 89V-145V input back to 120V without draining the battery
  • ✓ 8 wide-spaced NEMA5-15R outlets: 4 battery-backed, 4 surge-only
  • ✓ User-replaceable RBC51 battery pack extends life past the 3-year warranty
  • ✓ RJ45 dataline port shields dial-up or 10Mb Ethernet from surges

Cons

  • ✗ 300W ceiling rules out gaming rigs and modern GPUs
  • ✗ Only 4 of the 8 outlets get battery backup, not all 8
  • ✗ PWM sine wave, not pure sine - some active PFC supplies object
  • ✗ 10Mb-rated RJ45 port is dated for gigabit home networks

Manufacturer description

Compact Energy-Saving Desktop UPS 550VA/300W/120V Battery Backup for PCs, Home Theater or Digital Signage:The line-interactive AVR550U UPS system with AVR protection provides reliable battery backup and AC power protection against blackouts, brownouts, overvoltages, surges and line noise that can damage valuable electronics or destroy data. The eight-outlet 120V battery backup is ideal protection for your home office, media center or commerce components, including computers, routers, printers, HDTVs, Blu-ray players, game consoles, ATMs, security systems and digital signage equipment.Allows…

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SpecPicks Verdict

SpecPicks scored Eaton Tripp Lite AVR550U 550VA UPS 300W Battery Backup Surge… using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. TRIPP LITE's power protection lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. 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

  • BASIC HOME UPS BATTERY BACKUP WITH AVR PROTECTS FROM BLACKOUTS, BROWNOUTS & SURGES: 550VA / 300W Tripp Lite Uninterruptible Power Supply (UPS) provides 32 minutes of power to an energy-efficient desktop PC computer and small monitor. Provides PWM sine wave output in battery mode. AVR (automatic voltage regulation) continuously corrects voltages as low as 89V and as high as 145V back to nominal 120V power.
  • 8 OUTLETS (NEMA5-15R) SURGE PROTECTOR & UNINTTERUPTED POWER SUPPLY: Features 8 outlets with wide-spacing to accommodate bulky plug-ins. Four outlets feature both UPS back up battery & surge protection and 4 outlets offer surge protection only. Surge spike protection features 316 joules of supression rating. RJ45 port protect a standard dial-up/phone connection or 10Mb Ethernet line connection from data line surges.
  • HOME & OFFICE UPS: Provides 5 foot power cord & bottom keyhole mounting tabs for wall-mount installation. Provides EMI and RFI supression to protect against line noise that can damage your technology. Batteries are user-replaceable with Tripp Lite's RBC51 model allowing you to extend the life of your UPS if the batteries are depleted after the original warranty (sold separately).
  • SAFE SHUTDOWN & FILE SAVING: USB port and cable (included) connects to a computer running free PowerAlert software to enable safe unattended file saves and system shutdown in case of a prolonged power failure. PowerAlert software is available for download on Tripplite.com.
  • RELIABLE PRODUCT FULLY BACKED AND SUPPORTED: This product is covered by a 3-Year Manufacturer's Warranty and a $100,000 Ultimate Lifetime Connected Equipment Insurance. This product is also supported by Tripp Lite's expert technical support team over phone, web and email.

Full Specifications

BrandTRIPP LITE
ColorBlack
Runtime8 hours
Voltage120 volts
Wattage300 watts
Amperage4.6
Materialother
Unit Count1 Count
Form FactorCompact
ConnectivityUSB
Model NumberAVR550U
CompatibilityPC
Input Voltage120 volts
Maximum Power300 watts
Built-In MediaUSB Cable, Instruction Manual
Connector TypeNEMA 5 15P
Item Type NameLine-interactive UPS
Output Voltage120 volts_of_alternating_current
Output Wattage300 watts
Frequency Range60 Hz

Ready to buy?

Eaton Tripp Lite AVR550U 550VA UPS 300W Battery Backup Surge Protector AVR 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 — $96.99

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

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Eaton Tripp Lite AVR550U 550VA UPS 300W Battery Backup Surge Protector AVR
$96.99
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