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Rectangular black UPS unit, LCD front display, eight rear outlets, compact tower form

Vertiv

Vertiv PST5-850MT120 UPS 850VA/500W 120V 8 Outlets

SKU CH-C0SN-9A3SH MPN PST5-850MT120

Provides 850 VA battery backup and surge protection with four battery outlets, four surge outlets, USB port and LCD status display

  • Voltage version120 V
  • AC input voltage90-145 VAC
  • Input line frequency60 Hz, +/- 5 Hz, autosensing
  • Power inputNEMA 5-15P
  • Volt-ampere rating850 VA
  • Power rating500 W

VA 850 VA

  • 850 VA capacity keeps desktop and router running during outages
  • 500 W output supports monitors and consoles without overload
  • Four battery-backed outlets plus four surge-only ports protect every device
  • Energy Star certified design reduces standby power draw
  • LCD screen shows runtime, load, battery health and voltage at a glance

Purpose & Audience

The Vertiv PST5-850MT120 is an offline UPS rated at 850 VA and 500 W for 120 V environments. It suits desktop computers, gaming consoles, workstations, wireless routers and surveillance gear that need brief backup during outages.

Bundled Extras

Four outlets provide battery-backed runtime while four deliver surge-only protection. A USB port enables shutdown signalling and an RJ45/11 jack guards data lines. The unit is Energy Star certified and includes a 6 ft input cord with a NEMA 5-15P plug.

Build & Connectivity

The chassis measures 3.82" x 12.00" x 6.24" and weighs 9.70 lbs, offering desk, wall or rack mounting options. An LCD panel shows run time, load, battery status and voltage. At full load the battery lasts 1.5 minutes; at half load it lasts 6 minutes. Surge energy rating is 316 Joules.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $162.99
Cheaper than about 84% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameLiebert
Product linePST5
Model namePST5-850MT120
Power
Voltage version120 V
AC input voltage90-145 VAC
Input line frequency60 Hz, +/- 5 Hz, autosensing
Power inputNEMA 5-15P
Volt-ampere rating850 VA
Power rating500 W
Voltage output120 V
Power outlets8
Runtime on batteryFull Load: 1.5 min
Half Load: 6 min
Surge protection rating316 Joules
Size & build
Product dimensions3.82 in × 12 in × 6.24 in
Product weight9.7 lb (4.4 kg)
Shipping weight1.78 kg
Package size384 × 244 × 155 mm

Other versions of this model

3 more in the same range

Questions about this item

How often will the internal battery need replacing?

The sealed lead-acid battery typically lasts three to five years; replace it when the LCD shows reduced runtime or a battery-fault icon.

What stops me from running the full 500 W continuously?

At full load the battery only supports 1.5 minutes, so extended outages are the practical limit.

How loud and hot does it get during an all-day power cut?

Fan noise stays low in normal mode; the unit warms slightly but has no published dB or temperature figures.

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