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 7.5 minutes at half load, 2 minutes for a full load.

Can this UPS model be monitored?

The ST900U comes with a free download of PowerPanel provides a user-friendly dashboard interface for controlling and monitoring the UPS.

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

No, not all of the outlets have battery backup power. The ST900U has six battery backup and surge protected outlets and six surge protected outlets.

Can this unit accommodate larger plugs?

Yes, the ST900U can accommodate four large transformer-based plugs without compromising the access of other 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.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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- CyberPower ST900U Standby UPS Battery Backup and Surge Protector, 900VA/500W, 12 Outlets, 2 USB Charging Ports, Compact, UL Certified

- CyberPower ST900U Standby UPS Battery Backup and Surge Protector, 900VA/500W, 12 Outlets, 2 USB Charging Ports, Compact, UL Certified

Product ID: 83812286

Details

Battery Cell Composition
Sealed Lead
Brand
CyberPower
Color
Black
Product Dimensions
7"D x 12.2"W x
Voltage
120

⚡900VA/500W power capacity

🔋2.1A dual USB charging ports

🔌12 total outlets with 6 battery-backed

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$342.09

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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Details

Battery Cell Composition
Sealed Lead
Brand
CyberPower
Color
Black

Description

🔋 Stay powered, stay productive — never miss a beat!

PLUG PROTECT - 12 outlets including 6 with battery backup and 4 widely spaced for bulky plugs
FAST MOBILE CHARGING - Dual USB ports deliver 2.1A shared output for quick device power-ups
POWER WHEN IT COUNTS - 900VA/500W standby UPS ensures your devices stay online during outages
PEACE OF MIND GUARANTEED - 3-year warranty plus $125,000 connected equipment protection
WHISPER QUIET EFFICIENCY - GreenPower design minimizes noise and reduces energy consumption

The CyberPower ST900U is a compact, high-efficiency standby UPS delivering 900VA/500W backup power with 12 outlets (6 battery-backed) and 2 USB charging ports. Designed for home office and entertainment setups, it safeguards electronics from surges and outages while offering quiet operation and energy savings. Backed by a 3-year warranty and $125,000 connected equipment guarantee, it’s the smart choice for uninterrupted productivity.

Specifications

ASIN	B07GZT2QW7
Amperage	15 Amps
Battery Average Life	3 years
Battery Cell Composition	Sealed Lead Acid
Battery Cell Type	Sealed Lead Acid
Best Sellers Rank	#5 in Computer Uninterruptible Power Supply Units
Brand	CyberPower
Built-In Media	PS System^ User Manual^ USB A+B Type Cable
Color	Black
Connector Type	NEMA
Customer Reviews	4.6 out of 5 stars 878 Reviews
EU Spare Part Availability Duration	3 Years
Enclosure Material	Plastic
Form Factor	Compact
Frequency Range	47 – 63 Hz
Global Trade Identification Number	00649532621521
Input Voltage	120 Volts
Item Dimensions	7 x 12.2 x 3.1 inches
Item Dimensions D x W x H	7"D x 12.2"W x 3.1"H
Item Type Name	Uninterrupted Power Supply
Item Weight	7.7 Pounds
Lower Temperature Rating	32 Degrees Fahrenheit
Manufacturer	Cyber Power Systems (USA), Inc.
Material	Plastic
Maximum Power	500 Watts
Mfr Part Number	ST900U
Model Number	ST900U
Number of Outlets	12
Output Current	4.17 Amps
Output Voltage	120 Volts (AC)
Output Wattage	500 Watts
Power Plug Type	Type B - 3 pin (North American & Japanese)
Product Dimensions	7"D x 12.2"W x 3.1"H
Runtime	15 minutes
Specification Met	RoHS Compliant
Surge Protection Rating	890 Joules
UPC	649532621521
Unit Count	1.0 Count
Upper Temperature Rating	104 Degrees Fahrenheit
Voltage	120 Volts
Warranty Description	3-YEAR WARRANTY – INCLUDING THE BATTERY, $125,000 Connected Equipment Guarantee and FREE PowerPanel® Personal Edition Management Software (Download)
Wattage	500 watts

Reviews

J**Y

27.02.2026

H**R

6.05.2020

H**I

21.08.2025

J**E

3.03.2026

J**H

27.03.2026

D**S

29.06.2020

T**Z

22.06.2023

W**Z

19.02.2026

M**T

31.08.2020

D**N

13.04.2020

R**I

15.10.2024

J**E

15.01.2023

M**A

14.10.2025

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Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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