Power StationBench

CyberPower

CyberPower ST425 Standby UPS Battery Backup and Surge Protector

CyberPower ST425 Standby UPS Battery Backup and Surge ProtectorCyberPower ST425 Standby UPS Battery Backup and Surge Protector — photo 2CyberPower ST425 Standby UPS Battery Backup and Surge Protector — photo 3CyberPower ST425 Standby UPS Battery Backup and Surge Protector — photo 4CyberPower ST425 Standby UPS Battery Backup and Surge Protector — photo 5CyberPower ST425 Standby UPS Battery Backup and Surge Protector — photo 6

8.0Bench Rating · 4 sources

4.4(5,395 ratings)

$60

Price and rating captured from Amazon on September 28, 2026.

$60 at Amazon(paid link)

Capacity

Not listed

Continuous output

260 W

Surge output

Not listed

Specs are read from the manufacturer's own Amazon listing text. Anything the listing does not state is left blank rather than estimated.

Bench Verdict

8.0 / 10

Strong pick for home backup

Amazon owners rate it 4.4 out of 5 across 5,395 ratings. The most-watched hands-on video review is positive. Reddit owners are negative and expert coverage is positive. Together that earns a Bench Rating of 8.0 out of 10.

Watch out for

  • – Capacity not listed by the seller
  • – Low output — small devices only
  • – Surge output not listed

PowerStationBench verdict · updated September 28, 2026

Hands-on video

The most-watched review of this unit

Cyber Power UPS CP1500PFCLCD VS ST425 - Battery Backup, Uninterruptible Power Supply

Alex Tam · 13K views

Chosen automatically as the most-watched review of this exact unit with at least 5K views. We do not pay for or commission any video.

Bench Rating

8.0 out of 10

A single score blended from every independent read-out we could find. Amazon carries the most weight, a hands-on video review next. Sources we could not find are left out and the rest are reweighted, so nothing is invented.

Amazon customers

8.845% of score

Hands-on video review

8.525% of score

Cyber Power UPS CP1500PFCLCD VS ST425 - Battery Backup, Uninterruptible Power Supply

Reddit owners

4.015% of score

[UPS] CyberPower CP425SLG Standby UPS System ...

I've had bad experiences with cyberpower. Didn't survive a power surge and fried gear. I buy only APC now.Read more

Expert review

8.515% of score

CyberPower ST425 Standby UPS Systems - 425VA/260W ...

The ST425 UPS system is engineered to deliver sufficient battery backup to power your connected devices during utility power failures. It offers ample runtime ...Read more

From the listing

What the seller says

  • 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

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