Standby UPS Series

ST900U

$124.95 MSRP 
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  • Capacity: 900 VA / 500 W
  • Topology: Standby
  • Waveform: Simulated Sine Wave
  • Output: 120 VAC ± 5%
  • Plug type & cord: NEMA 5-15P, 5 ft. cord
  • Outlet types: 12 × NEMA 5-15R
  • Communication ports: USB
  • Management software: PowerPanel® Personal
  • ENERGY STAR® qualified: Yes
  • Warranty: 3 year
  • Connected Equipment Guarantee: $125,000
Overview

Product Overview

The CyberPower ST900U 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 graceful shutdown to protect against the loss of data and damage to valuable electronics during longer outages.

The ST900U has two USB charging ports with 2.1 amp shared total output which gives you a faster charging time. This unit is designed to minimize noise for a quieter work environment and to run efficiently to reduce power consumption. 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 $125,000 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.

Product Features
  • 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.
  • USB Charge Ports
    Rapidly charge and power USB devices such as tablets (including iPad), smartphones, MP3 players, and other mobile accessories.
  • PowerPanel® Personal Software
    Includes a free software download that provides a user-friendly dashboard interface for controlling and monitoring the UPS.
  • 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.
Specifications
Expand All
General
Energy Saving GreenPower UPS™ High-Efficiency
Energy Star Certified Yes
UPS Topology Standby
Battery
Battery Quantity 1
Battery Size 12 V / 7.2 Ah
Battery Type Sealed Lead-Acid Battery
Field-serviceable Battery Replaceable by qualified technician
Hot Swappable No
Replacement Battery Cartridge TBD
Runtime at Full Load 2 min
Runtime at Half Load 7.5 min
Typical Recharge Time 8 Hours
Input
Circuit Breaker 15 A
Cord Length 5 ft (1.5 m)
Input Frequency Range 47 Hz – 63 Hz
Input Plug Type NEMA 5-15P
Nominal Input Voltage 120 VAC
Output
On AC WaveForm Sine Wave
On Battery Frequency 50/60 Hz ± 1%
On Battery Voltage 120 VAC ± 5%
On Battery Waveform Simulated Sine Wave
Outlet Type 12 – NEMA 5-15R
Outlets – Battery & Surge Protected 6
Outlets – Surge-Only Protected 6
Outlets – Total 12
Outlets – Widely Spaced 4
Output Power Factor 0.6
Overload Protection Internal Circuitry Limiting
Circuit Breaker Protected
Typical Transfer Time 8 ms
USB Charge Port Yes
USB Charge Port Amperage 2.1 Amps (Shared)
USB Charge Port Quantity 2
USB Charge Port Standard Type A
USB Charge Port Type 2 Type A
USB Charge Port Voltage 5 VDC
VA 900 VA
Watts 500 W
Surge Protection & Filtering
EMI/RFI Filtration Yes
Surge Suppression (Joules) 890 J
Management & Communications
Audible Alarms Battery Mode
Low Battery
Overload
Fault
HID Compliant USB Port Yes
LED Indicators Power On
Management Cable USB Cable
Software (Free Download) PowerPanel® Personal
Physical
Color Black
Form Factor Compact
Keyhole Mounting Slots Yes
Material of Construction Plastic
Dimensions
Physical Dimensions – (WxHxD) (cm) 30.99 x 7.87 x 17.78 (cm)
Physical Dimensions – (WxHxD) (in) 12.2 x 3.1 x 7 (in)
Physical Dimensions – (WxHxD) (mm) 310 x 79 x 178 (mm)
Physical Weight (kg) 3.49
Physical Weight (lb) 7.7
Dimensions – Shipping
Shipping – Weight (kg) 7.26
Shipping – Weight (lb) 16.0
Shipping Dimensions – (WxHxD) (cm) 38.1 x 10.95 x 24.13 (cm)
Shipping Dimensions – (WxHxD) (in) 15.0 x 4.31 x 9.5 (in)
Shipping Dimensions – (WxHxD) (mm) 381.0 x 109.47 x 241.3 (mm)
Environmental
Operating Elevation 0 – 10000 ft (0 – 3048 m)
Operating Relative Humidity 0 – 95 % (non-condensing)
Operating Temperature 32 – 104 °F (0 – 40 °C)
Storage Elevation 0 – 50000 ft (0 – 15239 m)
Storage Temperature 5 – 113 °F (-15 – 45 °C)
Certifications
Environmental RoHS Compliant
Safety UL1778
cUL
FCC DOC Class B
CEC
Warranty
CEG Amount $125000
Connected Equipment Guarantee Lifetime
Extended Warranty Option WEXT5YR-U1A
Product Warranty 3 Year Limited Warranty
Feature Focus
GreenPower UPS Technology: High-Efficiency Design

GreenPower UPS™ Technology from CyberPower improves operating efficiency, reduce heat generation, and consume less power than conventional UPS models.

High-Efficiency Design significantly decreases power consumption to create an ultra-efficient backup battery for home and office use.

Transformers and Transformer Outlets

A transformer converts alternating current line voltage to a higher value or a lower value. Transformers rely upon electromagnetic induction, the process which occurs when the alternating current within a circuit generates current in a nearby circuit.

Transformers vary in design and size, as well as using different amounts of current. Small transformers plug into a wall outlet and create low direct current voltages which are used by common electronic devices. Transformer outlets are more widely spaced than other outlets to accommodate transformer block adapters or other adapters that are large in size. Transformer outlets can be used to connect any appropriate device to a surge protector.

Downloads

ST900U

448 KB

ST900U

304 KB

ST900U

67 KB

PowerPanel v2.5.1 for Windows

110.6 MB

PowerPanel v2.5.1 for Mac

144.9 MB

PowerPanel Linux | 64 Bit | .rpm | v1.4.1

1.9 MB

PowerPanel Linux | 32 Bit | .rpm | v1.4.1

1.6 MB

PowerPanel Linux | 64 Bit | .deb | v1.4.1

1.4 MB

PowerPanel Linux | 32 Bit | .deb | v1.4.1

1.3 MB

PowerPanel Linux | 32 Bit | .tar.gz | v1.4.1

1.7 MB

PowerPanel Linux | 64 Bit | .tar.gz | v1.4.1

1.8 MB
Support
What types of equipment are NOT allowed to be plugged into the UPS?

Any device which exceeds the unit’s VA/Watt rating should not be plugged into the outlets. High drain devices, medical equipment, and aquatic equipment also void the unit’s warranty. Below is a list of other devices that also void the warranty.

  • Laser printers
  • Space heaters
  • Copiers
  • Paper shredders
  • Vacuums
  • Curling irons
TECHNICAL SUPPORT
Please contact our Tech Support department with installation, troubleshooting, or general product questions.
Hours of operation: Monday – Friday 7:00am – 6:00pm CST
Contact Tech Support: Submit Ticket Now

Our Technical Support team will be happy help you with technical questions during business hours.

Our technical support team is available to 24-hours a day, seven days a week.
Live Monday - Friday
Available 24/7
Visit our Support Area

Submit a Support Ticket
Series
 Model Output VAOutput WattsForm FactorWaveformOutlets MSRP
 ST425 425 VA260 WCompactSimulated Sine Wave8 - NEMA 5-15R $59.95
 ST625U 625 VA360 WCompactSimulated Sine Wave8 - NEMA 5-15R $74.95
 CP350SLG $54.95
 SL700U 700 VA370 WCompactSimulated Sine Wave8 - NEMA 5-15R $89.95
 ST900U 900 VA500 WCompactSimulated Sine Wave12 - NEMA 5-15R $124.95
 CP550SLG 550 VA330 WCompactSimulated Sine Wave8 x NEMA 5-15R $73.95
Runtime
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