How long will the UPS power my systems after the power goes out?

Run times vary based on the power required by connected devices. This system is estimated run for 6 minutes at half load, 1.5 minutes for a full load.

Can this UPS model be monitored?

No, the CyberPower ST425 cannot be monitored.

Do all of the outlets have battery backup power and surge protection?

No, not all of the outlets have battery backup power. The ST425 has (4) battery backup and surge protected outlets and (4) surge protected outlets.

Can this unit accommodate larger plugs?

Yes, the ST425 can accommodate four large transformer-based plugs without compromising the access of other six outlets.

How do I mute the alarms?

To turn the Alarm Off, quickly press the power button twice. You will hear two short beeps when the Alarm is turned off. To turn the Alarm back ON, quickly press the power button twice. You will hear a single short beep when the Alarm is turned on.

CyberPower ST425 Standby UPS System, 425 VA / 260 Watt, 8 Outlet, Compact Model ST425

CyberPower ST425 Standby UPS System, 425 VA / 260 Watt, 8 Outlet, Compact Model ST425

Product ID: 742025255

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Details

Brand
CyberPower
Battery Cell Composition
Sealed Lead
Product Dimensions
8.1D x 21.1W x
Voltage
425.0
Color
black

⚡425 VA power capacity

🔋6 min half-load battery runtime

🔌8 surge-protected outlets

Description

🔋 Power through outages like a pro — never miss a beat!

EXTENDED RUNTIME - Up to 6 minutes at half load to save your work and prevent data loss.
RELIABLE POWER BACKUP - Keep your devices running through unexpected outages with 425 VA / 260W capacity.
PEACE OF MIND WARRANTY - Backed by a $75,000 connected equipment warranty and 3-year product warranty.
MULTIPLE DEVICE SUPPORT - 8 NEMA5-15R outlets let you protect your entire home office setup.
COMPREHENSIVE SURGE PROTECTION - 890 Joules surge energy rating shields your gear from damaging spikes.

The CyberPower ST425 Standby UPS delivers 425 VA / 260W of reliable battery backup and surge protection with 8 outlets, ensuring your home office or entertainment devices stay safe and powered during outages. Featuring a sealed lead acid battery with up to 6 minutes runtime at half load, 890 Joules surge energy rating, and a robust $75,000 connected equipment warranty, this compact UPS is engineered for peace of mind and professional-grade performance.

Specifications

ASIN	B07GZR981Y
Amperage	2.17 Amps
Battery Cell Composition	Sealed Lead Acid
Battery Cell Type	Sealed Lead Acid
Brand	CyberPower
Color	black
Connector Type	NEMA
Customer Reviews	4.5 out of 5 stars 4,873 Your Review
EU Spare Part Availability Duration	3 Years
Enclosure Material	Plastic
Form Factor	UPS System
Frequency Range	47-63Hz
Global Trade Identification Number	00649532621507
Input Voltage	120 Volts
Item Dimensions	8.1 x 21.1 x 11.4 cm
Item Dimensions D x W x H	8.1D x 21.1W x 11.4H cm
Item Type Name	UPS System
Item Weight	3.8 Pounds
Lower Temperature Rating	32 Degrees Fahrenheit
Manufacturer	CyberPower
Material	Plastic
Maximum Power	260 Watts
Model Number	ST425
Number of Outlets	8
Output Current	2.17 Amps
Output Voltage	120 Volts
Output Wattage	260 Watts
Power Plug Type	Type B - 3 pin (North American)
Product Dimensions	8.1D x 21.1W x 11.4H cm
Specification Met	Energy Star, GreenPower UPS, RoHS
UPC	649532621507
Unit Count	1 Count
Upper Temperature Rating	104 Degrees Fahrenheit
Voltage	120 Volts
Wattage	260 W

Reviews

S**N

Reliable Backup Power! Great Value in the CyberPower ST425

25.04.2025

R**S

Great for brief loss of power

30.12.2025

G**E

Quiet Efficiency: The CyberPower 425 VA UPS Review

17.06.2023

D**E

Reliable

11.01.2026

D**.

Does the job but does not turn back on after battery is depleted.

21.11.2025

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TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

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