The CyberPower ST425 uninterruptible power supply (UPS) system provides battery backup and surge protection for lightning-induced surges and other power events that can damage electronic equipment. This unit delivers enough battery backup to power connected electronics through utility power failure and enough runtime to perform a proper shutdown to protect against the loss of data and damage to valuable electronics during longer outages. Including a sleek design, this UPS is perfect for all your home office and entertainment needs, including computers, gaming consoles, and broadband routers.

With a $75,000 lifetime connected equipment guarantee and a three-year warranty, you can trust CyberPower’s commitment to the quality of this Battery Backup with Surge Protection.

Battery Backup
Supplies power long enough for equipment to properly shut down when utility power fails. Helps prevent loss of data and minimizes the component stress caused by a hard shutdown.

Surge Protection
Diverts excess voltage away from sensitive electronic equipment during an AC power surge or power spike to prevent damage.

Simulated Sine Wave Output
Uses pulse wave modulation to generate a stepped, approximated sine wave to supply cost-effective battery backup power for equipment that does not require sine wave output.

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.

Transformer-Spaced Outlets
Accommodates large transformer-based plugs without compromising the access of other outlets.

ENERGY STAR®
This model is an ENERGY STAR® qualified Uninterruptible Power Supply (UPS) system. ENERGY STAR is the trusted, government-backed symbol for energy-efficient products and practices that help save money and protect the environment.

Three-Year Warranty
CyberPower will replace a defective UPS system (including batteries) within three years of the purchase date. See warranty for details.

Connected Equipment Guarantee
CyberPower will repair or replace properly connected equipment if it is damaged by a power surge.

Power
Output power capacity	0.425 kVA
Output power	260 W
Input operation voltage (min)	96 V
Input operation voltage (max)	140 V
Output operation voltage (min)	120 V
Output operation voltage (max)	120 V
Surge energy rating	890 J
Output frequency	50/60 Hz
Input frequency	47/63 Hz
Ports & interfaces
Cable length	59.1" (1.5 m)
Socket circuit breaker	Yes
AC outlets quantity	8 AC outlet(s)
AC outlet types	NEMA 5-15R
Power plug	NEMA 5-15P
Performance
UPS topology	Standby (Offline)
Audible alarm modes	Alarm when on battery, Fault, Low battery alarm, Overload alarm
EMI/RFI noise filtering	Yes
Surge protection	Yes
Waveform	Pseudo sine
Power protection features	Overload
LED indicators	Power
Audible alarm(s)	Yes
Transfer time (Line Mode to Battery Mode)	8 ms
Features
UPS topology	Standby (Offline)
Output power capacity	0.425 kVA
Audible alarm modes	Alarm when on battery, Fault, Low battery alarm, Overload alarm
Output power	260 W
Input operation voltage (min)	96 V
Input operation voltage (max)	140 V
Output operation voltage (min)	120 V
Output operation voltage (max)	120 V
Surge energy rating	890 J
EMI/RFI noise filtering	Yes
Surge protection	Yes
Waveform	Pseudo sine
Power protection features	Overload
Output frequency	50/60 Hz
Audible alarm(s)	Yes
Socket circuit breaker	Yes
Transfer time (Line Mode to Battery Mode)	8 ms
Input frequency	47/63 Hz
Battery
Battery technology	Sealed Lead Acid (VRLA)
Number of batteries supported	1
Battery recharge time	8 h
Typical backup time at half load	6 min
Typical backup time at full load	1.5 min
Battery voltage	12 V
Battery capacity	2.9 Ah
Design
Form factor	Compact
Product colour	Black
Safety	UL1778, cUL, FCC DOC B, CEC
Cable length	59.1" (1.5 m)
LED indicators	Power
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-15 - 45 °C
Operating relative humidity (H-H)	0 - 95%
Operating altitude	0 - 118110.2" (0 - 3000 m)
Non-operating altitude	0 - 590551.2" (0 - 15000 m)
Technical details
Output frequency	50/60 Hz
Sustainability certificates	ENERGY STAR
Compliance certificates	RoHS
Weight & dimensions
Width	8.27" (210 mm)
Depth	3.19" (81 mm)
Height	4.49" (114 mm)
Weight	3.79 lbs (1.72 kg)
Packaging data
Manual	Yes
Certificates
Safety	UL1778, cUL, FCC DOC B, CEC
Packaging content
Manual	Yes