CyberPower ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA 260 W 8 AC outlet(s)
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ST425, 96–140 V AC, 47–63 Hz, 425 VA, 260 W, 8x NEMA 5-15R, 12V / 2.9Ah
Part ST425 · UPC 649532621507
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Add to cart Continue browsing- 425 VA/260 W
- 8 Standard Outlets
- Standby Topology
- Full-time Surge Protection and Battery Backup
About this product
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.
Manufacturer warranty information
3 Years Limited
Features
- UPS topology
- Standby (Offline)
- Output power capacity
- 0.425 kVA
- Output power
- 260 W
- Waveform
- Pseudo sine
- Input operation voltage (min)
- 96 V
- Input operation voltage (max)
- 140 V
- Input frequency
- 47/63 Hz
- Output operation voltage (min)
- 120 V
- Output operation voltage (max)
- 120 V
- Output frequency
- 50/60 Hz
- Surge energy rating
- 890 J
- Transfer time (Line Mode to Battery Mode)
- 8 ms
- EMI/RFI noise filtering
- Yes
- Surge protection
- Yes
- Power protection features
- Overload
- Audible alarm(s)
- Yes
- Audible alarm modes
- Alarm when on battery, Fault, Low battery alarm, Overload alarm
- Socket circuit breaker
- Yes
Ports & interfaces
- AC outlet types
- NEMA 5-15R
- Power plug
- NEMA 5-15P
- AC outlets quantity
- 8 AC outlet(s)
Battery
- Battery technology
- Sealed Lead Acid (VRLA)
- Battery capacity
- 2.9 Ah
- Battery voltage
- 12 V
- Number of batteries supported
- 1
- Typical backup time at full load
- 1.5 min
- Typical backup time at half load
- 6 min
- Battery recharge time
- 8 h
Design
- Form factor
- Compact
- Cable length
- 1.5 m
- Product colour
- Black
- 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 - 3000 m
- Non-operating altitude
- 0 - 15000 m
Certificates
- Compliance certificates
- RoHS
Packaging content
- Manual
- Yes
Safety regulation & standards
- Safety
- UL1778, cUL, FCC DOC B, CEC
Sustainability
- Sustainability certificates
- ENERGY STAR
Weight & dimensions
- Width
- 210 mm
- Depth
- 81 mm
- Height
- 114 mm
- Weight
- 1.72 kg
Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License