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APC Back-UPS BX750MI vs Eaton Ellipse PRO 850 IEC

Researched, not hands-on tested.How we review ›

all judged against UPS units at a similar price

The Eaton Ellipse PRO 850 IEC scores 6.7/10 overall, ahead of the APC Back-UPS BX750MI at 5.2/10.

The APC Back-UPS BX750MI leads on runtime and battery.

The Eaton Ellipse PRO 850 IEC leads on topology and waveform, NAS and server integration and UK outlets and build.

They score the same on capacity.

The biggest difference is NAS and server integration, where the Eaton Ellipse PRO 850 IEC scores 8/10 to the APC Back-UPS BX750MI's 4/10.

APC Back-UPS BX750MI

APC Back-UPS BX750MI

5.2/10verdict: good, not the best

The APC Back-UPS BX750MI is for people protecting a small NAS, router and switch who already own IEC C14 power leads. It suits a buyer who values line-interactive protection and decent battery runtime more than a pure sine wave output. It is less suited to anyone who needs confirmed automatic NAS shutdown or UK 13A sockets on the unit.

Typically about £84.80 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Eaton Ellipse PRO 850 IEC

6.7/10verdict: buy

The Eaton Ellipse PRO 850 IEC suits anyone who wants to protect up to three devices from one spot and is happy with USB-only monitoring. It offers 510 W, a USB HID port with Eaton UPS Companion software and a user-replaceable battery. It is a poor fit for anyone who needs network-card management or long battery runtime.

Typically about £285.92 in the UK when we researched itSearch Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightAPC Back-UPS BX750MIEaton Ellipse PRO 850 IEC
Topology and waveform25%5/106/10
NAS and server integration25%4/108/10
Capacity20%7/107/10
Runtime and battery15%6/105/10
UK outlets and build15%4/107/10
Overall5.2/106.7/10

Specifications

SpecAPC Back-UPS BX750MIEaton Ellipse PRO 850 IEC
Capacity (VA / W)750 VA / 410 W850 VA / 510 W
TopologyLine-interactiveLine-interactive
Output waveformStepped approximation to a sine wave, not pure sinenot listed
OutletsFour IEC 60320 C13 outlets, all battery-backed3 x C13 outlets plus 1 C13 surge-only outlet
Runtime at half load8.5 minutes at half load (full load 1 minute), retailer spec table, not confirmed on APC page9 min at half load
USB / network managementUSB port listed; USB HID protocol and Synology/QNAP/TrueNAS support not confirmed on an APC pageUSB port (HID compliant) with Eaton UPS Companion software; no Ethernet or network card
BatterySealed lead-acid, 12 V nominal; recharge time 8 hours; expected life 3-5 years; user replaceability not confirmed on an APC page12 V / 9 Ah VRLA sealed lead-acid, one battery, user replaceable

Strengths and weaknesses

APC Back-UPS BX750MI

  • + Line-interactive topology with 410 W capacity
  • + Four IEC outlets, all battery-backed
  • + Owners praise runtime and power-cut performance
  • − Stepped sine output, not pure sine
  • − Owners report heat, smell, build and failure issues

Skip it if:

  • Buyers who need confirmed automatic shutdown with Synology, QNAP or TrueNAS
  • Anyone who wants UK 13A sockets on the unit
  • Users whose equipment needs a pure sine wave output
Read the full APC Back-UPS BX750MI review ›

Eaton Ellipse PRO 850 IEC

  • + 510 W rating with 97% efficiency at maximum load
  • + HID-compliant USB with Eaton UPS Companion software
  • + User-replaceable battery and three-year warranty
  • − 9 minutes at half load is short
  • − No Ethernet port or network card
  • − Only three battery-backed outlets

Skip it if:

  • Buyers who need network-card or Ethernet-based UPS management
  • Anyone needing more than a few minutes of runtime at moderate load
  • Users with more than three devices that all need battery backup
Read the full Eaton Ellipse PRO 850 IEC review ›

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