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OPTI-UPS DS3000E II (3000VA / 3000W) Online Double Conversion Uninterruptible Power Supply, Pure Sine Wave, UPS Battery Backup, Surge Protection (Requires 30 amp wall Outlet or Adaptor, See Pictures)
Opti UPS

OPTI-UPS DS3000E II (3000VA / 3000W) Online Double Conversion Uninterruptible Power Supply

Bottom line: The OPTI-UPS DS3000E II is a specs-and-price decision rather than a crowd-consensus one in the power protection category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by Opti UPS's warranty and support channels

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored OPTI-UPS DS3000E II (3000VA / 3000W) Online Double Conversion… using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. Opti UPS's power protection lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Requires 30 amp wall outlet or need to buy optional (30 amp to 15 amp adapter), see pictures 3000va UPS is 60 lbs, heavy unit requires 2 people to handle, prefer to be used in COMMERCIAL settings due to FAN noise level and outlet requirements. Online (Double-Conversion) UPS Typically 24/7 continuous fan operation (Less than 50dBA @ 1 Meter / 3.28 feet)
  • Zero Transfer Time (ms) for absolute continuous operation (on-line), For data center and mission critical systems, computers, instruments, automation.
  • (3000VA / 3000W) input voltage: 80-150vac / output voltage: 110/115/120/127vac (50/60hz auto sensing) 8 x NEMA 5-15R, (Output voltage regulation: +/- 1 percent)
  • 3 hours recharge time 90 percent, Cold Start (DC power on), ECO mode energy saving, Emergency power off (EPO) function, LCD screen, monitoring software included.
  • 2 Year Limited warranty / TUV Certification (tested to UL 1778), This is updated version of, DS3000B / DS3000B-RM, (Durable Series) Tower mount, Topology: True sine wave, online double conversion, single phase (2W+G), compatible with diesel power generator, supports active PFC power supplies.
  • Press the ON Button for FEW SECONDS to fully power on the UPS, the back outlets are then ready for your devices. Simple Plug & Play operation. Runtime chart in pictures. (Due to item value * SIGNATURE REQUIRE FOR DELIVERY *)

Full Specifications

BrandOpti UPS
ColorBlack
Runtime3 hours
Voltage120 volts
Wattage3000 watts
Amperage20
Unit Count1 Count
Form FactorTower
Model NumberDS3000E
Input Voltage120.01 volts
Maximum Power3000 watts
Connector Type30 amp electrical connector, NEMA 5-15R
Output Voltage120
Output Wattage3000
Frequency Range50-60 MHz
Item Dimensions16.6 x 7.5 x 12.6 inches
Mfr Part NumberDS3000E
Power Plug Type32A 5 Pin
Battery Cell TypeLead Acid
Number of Outlets8
Full listing titleOPTI-UPS DS3000E II (3000VA / 3000W) Online Double Conversion Uninterruptible Power Supply, Pure Sine Wave, UPS Battery Backup, Surge Protection (Requires 30 amp wall Outlet or Adaptor, See Pictures)

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OPTI-UPS DS3000E II (3000VA / 3000W) Online Double Conversion Uninterruptible Power Supply, Pure Sine Wave, UPS Battery Backup, Surge Protection (Requires 30 amp wall Outlet or Adaptor, See Pictures) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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OPTI-UPS DS3000E II (3000VA / 3000W) Online Double Conversion Uninterruptible Power Supply, Pure Sine Wave, UPS Battery Backup, Surge Protection (Requires 30 amp wall Outlet or Adaptor, See Pictures)
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