CyberPower · Uninterruptible Power Supplies (UPSs)

CyberPower ST900U uninterruptible power supply (UPS) Standby (Offline) 0.9 kVA price in United States

Model ST900UMPN ST900UEAN 649532621521

Battery7.2 Ah
TypeCompact
Weight3.49 kg
ColourBlack

Lowest price

$124.95

at PCLiquidationsIn stock

1 store
1 in stock
Checked 23 Oct 2026, 17:42 UTC

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Prices in United States

1 store · prices in USD · updated 23 Oct 2026, 17:42 UTC

Lowest price$124.95at PCLiquidations · shipping not statedGo to PCLiquidations

Price range across 1 offer

Every store asks the same price.

1 of 1 stores in stock
0 with free shipping
Checked 23 Oct 2026, 17:42 UTC

PCLiquidationsLowest priceCyberpower CyberPower ST900U 12 Outlet 900VA 500W Standby UPS System In stockShipping not stated
$124.95item price, shipping extra
Go to store : PCLiquidations (opens in a new tab)

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Best price · PCLiquidations$124.95

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Product details

Identification

Brand: CyberPower
Product: ST900U uninterruptible power supply (UPS) Standby (Offline) 0.9 kVA
Full name: CyberPower ST900U uninterruptible power supply (UPS) Standby (Offline) 0.9 kVA 500 W 12 AC outlet(s)
Manufacturer part number: ST900U
EAN / UPC: 649532621521
Category: Uninterruptible Power Supplies (UPSs)

Energy · ENERGY STAR certified

List: Uninterruptible power supplies
Certified: 2018-04-11
Average efficiency: 98.4 %

47 specifications from the manufacturer's data sheet

Features

UPS topology	Standby (Offline)
Output power capacity	0.9 kVA
Output power	500 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
Transfer time (Line Mode to Battery Mode)	8 ms
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	12 AC outlet(s)
USB port	Yes
USB 2.0 ports quantity	2
USB port type	USB Type-A

Battery

Battery technology	Sealed Lead Acid (VRLA)
Battery capacity	7.2 Ah
Battery voltage	12 V
Number of batteries supported	1
Typical backup time at full load	2 min
Typical backup time at half load	7.5 min
Battery recharge time	8 h

Design

Form factor	Compact
Product colour	Black
Cable length	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 - 3000 m
Non-operating altitude	0 - 15000 m

Packaging content

Cables included	USB cable
Manual	Yes

Certificates

Compliance certificates	RoHS

Sustainability

Sustainability certificates	ENERGY STAR

Safety regulation & standards

Safety	UL1778, cUL, FCC DOC B, CEC

Weight & dimensions

Width	309 mm
Depth	177 mm
Height	78 mm
Weight	3.49 kg

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