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CyberPower ST425 Standby UPS Battery Backup and Surge Protector | Uninterruptible power supply and surge protection with 425VA, 260W capacity and 8 outlets

Name: CyberPower ST425 Standby UPS Battery Backup and Surge Protector | Uninterruptible power supply and surge protection with 425VA, 260W capacity and 8
Brand: Unbranded
SKU: B07GZR981Y
Price: 59.95 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 →

$59.95

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

Bottom line: The CyberPower ST425 Standby UPS Battery Backup and Surge Protector | Uninterruptible power supply and surge protection with 425VA, 260W capacity and 8 outlets is a niche pick — read recent reviews before buying in the power protection category, priced around $59.95. Compare close alternatives before committing.

The CyberPower ST425 is a standby uninterruptible power supply built for the moment your utility power drops out mid-session. Rated at 425VA/260W, it uses simulated sine wave output to keep a desktop, router, or gaming console alive long enough for a graceful shutdown, so you do not lose unsaved work or risk file corruption during an outage. Eight NEMA 5-15R outlets split the load: four are battery backup plus surge protected for the equipment that must stay on, and four are surge-only for peripherals like printers, monitors, and speakers. The outlets are transformer-spaced, so bulky…

SpecPicks Verdict

SpecPicks scored CyberPower ST425 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

✓ 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

425VA/260W Standby Uninterruptible Power Supply (UPS): Uses simulated sine wave output to provide battery backup power and to safeguard home office, home entertainment including computers, gaming consoles, and broadband routers
8 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
ADDITIONAL FEATURES: LED status light indicates Power-On and Wiring Fault, transformer-spaced outlets
GREENPOWER UPS HIGH EFFICIENCY DESIGN: Reduces power consumption by utilizing a compact charger and power inverter to create an ultra-efficient backup power system for home and office use
3-YEAR WARRANTY – INCLUDING THE BATTERY; 75K USD Connected Equipment Guarantee; UL SAFETY CERTIFIED: Product has been tested in a UL certified lab and listed with UL as meeting or exceeding safety standards

Full Specifications

Brand	CyberPower
Color	Black
Runtime	1 minute
Voltage	120 volts
Wattage	260 watts
Amperage	2.17 A
Unit Count	1 Count
Form Factor	Compact
Model Number	ST425
Input Voltage	120 volts_of_alternating_current
Maximum Power	260 watts
Built-In Media	UPS System^ User Manual
Connector Type	NEMA
Item Type Name	Uninterrupted Power Supply
Output Current	2.17 A
Output Voltage	120 volts
Output Wattage	260 watts
Frequency Range	47 – 63 Hz
Item Dimensions	3.2 x 8.3 x 4.5 inches
Mfr Part Number	ST425

Ready to buy?

CyberPower ST425 Standby UPS Battery Backup and Surge Protector | Uninterruptible power supply and surge protection with 425VA, 260W capacity and 8 outlets 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 2026-04-19. Price and availability subject to change.