CyberPower CP550SLG Standby UPS Battery Backup and Surge Protector | Surge Protector, 550VA/330W, 8 Outlets, UL Certified

Name: CyberPower CP550SLG Standby UPS Battery Backup and Surge Protector | Surge Protector, 550VA/330W, 8 Outlets, UL Certified
Brand: Unbranded
SKU: B002QAUN2M
Price: 77.95 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 →

$77.95

As an Amazon Associate, SpecPicks earns from qualifying purchases.

🛒 See live eBay price Also on Amazon → Compare to similar power protection

*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.

Bottom line: The CyberPower CP550SLG Standby UPS Battery Backup and Surge Protector | Surge Protector, 550VA/330W, 8 Outlets, UL Certified is a niche pick — read recent reviews before buying in the power protection category, priced around $77.95. Compare close alternatives before committing.

The CyberPower Standby CP550SLG UPS safeguards a home office PC and other electronics (monitors, scanners, speakers, CD/DVD/MP3 players and more) from surges, sags, brownouts and other power disruptions. The CP550SLG provides surge protected, battery backup and features 550VA/330 Watt capacity, GreenPower UPS technology, 8-NEMA 5-15P receptacles, (4 wide-spaced), Compact design, 1- USB port, phone/fax (RJ11) line protection, EMI/RFI filters, PowerPanel UPS management software , GreenPower UPS - Advanced energy-saving circuitry that reduces UPS energy costs by 75 percent, USB Connectivity…

SpecPicks Verdict

SpecPicks scored CyberPower CP550SLG Standby UPS Battery Backup and Surge Protector |… 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

✓ LED INDICATORS: LED status lights indicate Power-On and Wiring Fault
✓ 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/330W Standby Battery Backup Uninterruptible Power Supply (UPS) System uses simulated sine wave output to safeguard workstations, networking devices, and home entertainment equipment
EIGHT NEMA 5-15R OUTLETS: Four battery backup & surge protected outlets; Four surge protected outlets; INPUT: NEMA 5-15P right angle, 45 degree offset plug with five foot power cord
LED INDICATORS: LED status lights indicate Power-On and Wiring Fault
USB CONNECTIVITY: HID compliant USB port enables full integration with built-in power management and auto-shutdown features of Windows, Linux and Mac OS X
3-YEAR WARRANTY – INCLUDING THE BATTERY; $100,000 Connected Equipment Guarantee and FREE PowerPanel Personal Edition Management Software (Download)

Full Specifications

Brand	CyberPower
Color	Black
Runtime	8 minutes
Voltage	120 volts
Wattage	330 watts
Amperage	10 A
Unit Count	1 Count
Form Factor	Compact
Connectivity	USB
Model Number	CP550SLG
Compatibility	Mac, Linux
Input Voltage	120 volts
Maximum Power	330 watts
Built-In Media	Item
Connector Type	NEMA 5-15P
Item Type Name	UPS Systems
LED INDICATORS	LED status lights indicate Power-On and Wiring Fault
Output Voltage	120 volts_of_alternating_current
Output Wattage	330 watts
Frequency Range	50/60Hz ± 3Hz

Ready to buy?

CyberPower CP550SLG Standby UPS Battery Backup and Surge Protector | Surge Protector, 550VA/330W, 8 Outlets, 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.

See live eBay listings →

*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.