Best UPS Battery Backups Compared in 2026

These five UPS units are compared on UPS type, VA/W ratings, outlet count, communication features, form factor and price. The range runs from a compact online double-conversion model through to rackmount and large capacity units aimed at heavier loads. VA and W figures are listed separately where supplied and should not be treated as interchangeable, and outlet counts and communication features vary considerably across the group.

5 selected productsListing snapshot 23 October 2026Selection Editorial

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PC Hardware Compare editorial teamProduct information editor

Winner

PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Dou

The PowerWalker VFI 1000 ICR IoT UK at £312.58 is the lowest priced option here and a practical starting point for smaller setups, rather than a pick for every load.

Check price at PCHub

Product	Brand	Price	Retailers	Rated power	Listed product details
PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Dou	PowerWalker	£312.58	PCHub	1000 W	PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA 1000 W 8 AC outlet(s)
APC Smart-UPS C. Line Interactive. 1000VA. Rackmount 2U. 230V. 4x IEC	APC	£576.52	PCHub	Not listed	APC Smart-UPS C. Line Interactive. 1000VA. Rackmount 2U. 230V. 4x IEC C13 outlets. SmartConnect port. USB and Serial communication. AVR. Graphic LCD
CyberPower Online S Series OLS3000ERT2UA uninterruptible power supply	CyberPower	£654.15	PCHub	2700 W	CyberPower Online S Series OLS3000ERT2UA uninterruptible power supply (UPS) Double-conversion (Online) 3 kVA 2700 W 10 AC outlet(s)
Uniti Power SPY3000RMi2U uninterruptible power supply (UPS) Double-con	Uniti Power	£890.04	PCHub	3000 W	Uniti Power SPY3000RMi2U uninterruptible power supply (UPS) Double-conversion (Online) 3 kVA 3000 W 9 AC outlet(s)
Vertiv Liebert GXT5 Double Online Conversion UPS -6000VA/6000W\| 230V\|	Vertiv	£2,807.90	PCHub	6000W	Vertiv Liebert GXT5 Double Online Conversion UPS -6000VA/6000W\| 230V\| With Rackmount Kit and Intellislot RDU101 Communication Card\| GXT5-6000IRT5UXLN

1. PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Dou

Check price at PCHub

Price shown £312.58

An online double-conversion UPS rated at 1 kVA and 1000 W, with eight AC outlets.

The PowerWalker VFI 1000 ICR IoT UK uses online double-conversion topology, rated at 1 kVA and 1000 W, with both VA and W figures stated for this model.

It offers eight AC outlets, the second highest count among the models with outlet figures listed. The listing does not give a form factor.

Benchmark

Geekbench does not benchmark the primary function of PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Dou. Its scores measure the processor or graphics device in the test computer, not this product.

Browse Geekbench Community Results

UPS runtime and transfer testing

Compare runtime at the same measured load, transfer time and voltage regulation under controlled conditions.

A comparable third-party result for PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Dou is not included here. See UPS runtime and testing guidance explains the relevant test or benchmark method.

At £312.58 this is the cheapest unit in the roundup.

Product specifications
Specification	Information
Brand	PowerWalker
Price	£312.58
Rated power	1000 W
Listed product details	PowerWalker VFI 1000 ICR IoT UK uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA 1000 W 8 AC outlet(s)

Compatible hardware

Check against Desktop PCsCheck connected load stays within UPS wattage and outlet limits.
Check against Network switchesMatch equipment load and plug type to available UPS capacity and outlets.
Check against Replacement UPS batteriesUse a replacement battery pack specified for the exact UPS model.

What we like

Lowest price in the roundup
Both VA and W ratings stated
Eight AC outlets

What we don't like

No communication features listed
Lowest kVA rating among the online double-conversion units here

Check price at PCHub

2. APC Smart-UPS C. Line Interactive. 1000VA. Rackmount 2U. 230V. 4x IEC

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Price shown £576.52

A line interactive UPS rated at 1000 VA in 2U rackmount form, with four IEC C13 outlets and SmartConnect communication.

The APC Smart-UPS C is a line interactive unit rated at 1000 VA, the only line interactive model in this roundup, with no wattage figure listed for comparison.

It is built in a 2U rackmount form factor with four IEC C13 outlets, SmartConnect, USB and serial communication, AVR and a graphic LCD.

Benchmark

Geekbench does not benchmark the primary function of APC Smart-UPS C. Line Interactive. 1000VA. Rackmount 2U. 230V. 4x IEC. Its scores measure the processor or graphics device in the test computer, not this product.

Browse Geekbench Community Results

UPS runtime and transfer testing

Compare runtime at the same measured load, transfer time and voltage regulation under controlled conditions.

A comparable third-party result for APC Smart-UPS C. Line Interactive. 1000VA. Rackmount 2U. 230V. 4x IEC is not included here. See UPS runtime and testing guidance explains the relevant test or benchmark method.

At £576.52 this sits in the lower half of the roundup on price.

Product specifications
Specification	Information
Brand	APC
Price	£576.52
Listed product details	APC Smart-UPS C. Line Interactive. 1000VA. Rackmount 2U. 230V. 4x IEC C13 outlets. SmartConnect port. USB and Serial communication. AVR. Graphic LCD

Compatible hardware

Check against Desktop PCsCheck connected load stays within UPS wattage and outlet limits.
Check against Network switchesMatch equipment load and plug type to available UPS capacity and outlets.
Check against Replacement UPS batteriesUse a replacement battery pack specified for the exact UPS model.

What we like

SmartConnect, USB and serial communication listed
2U rackmount form factor
Graphic LCD included

What we don't like

No wattage rating stated
Fewest outlets among the units with outlet counts listed

Check price at PCHub

3. CyberPower Online S Series OLS3000ERT2UA uninterruptible power supply

Check price at PCHub

Price shown £654.15

An online double-conversion UPS rated at 3 kVA and 2700 W, with ten outlets.

The CyberPower OLS3000ERT2UA uses online double-conversion topology, rated at 3 kVA and 2700 W, with both figures stated for this model.

It offers ten outlets, the highest count listed in this roundup, aimed at setups needing multiple connected devices.

Benchmark

Geekbench does not benchmark the primary function of CyberPower Online S Series OLS3000ERT2UA uninterruptible power supply. Its scores measure the processor or graphics device in the test computer, not this product.

Browse Geekbench Community Results

UPS runtime and transfer testing

Compare runtime at the same measured load, transfer time and voltage regulation under controlled conditions.

A comparable third-party result for CyberPower Online S Series OLS3000ERT2UA uninterruptible power supply is not included here. See UPS runtime and testing guidance explains the relevant test or benchmark method.

At £654.15 this sits in the middle of the roundup on price.

Product specifications
Specification	Information
Brand	CyberPower
Price	£654.15
Rated power	2700 W
Listed product details	CyberPower Online S Series OLS3000ERT2UA uninterruptible power supply (UPS) Double-conversion (Online) 3 kVA 2700 W 10 AC outlet(s)

Compatible hardware

Check against Desktop PCsCheck connected load stays within UPS wattage and outlet limits.
Check against Network switchesMatch equipment load and plug type to available UPS capacity and outlets.
Check against Replacement UPS batteriesUse a replacement battery pack specified for the exact UPS model.

What we like

Highest stated outlet count in the roundup
Both VA and W ratings stated
Mid-range price point

What we don't like

No communication features listed
Lower W rating relative to its kVA figure compared with the Uniti Power model

Check price at PCHub

4. Uniti Power SPY3000RMi2U uninterruptible power supply (UPS) Double-con

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Price shown £890.04

An online double-conversion UPS rated at 3 kVA and 3000 W, with nine outlets.

The Uniti Power SPY3000RMi2U uses online double-conversion topology, rated at 3 kVA and 3000 W. These figures have the same number but use different units.

It offers nine outlets, close to the highest count in this roundup, within an online double-conversion design.

Benchmark

Geekbench does not benchmark the primary function of Uniti Power SPY3000RMi2U uninterruptible power supply (UPS) Double-con. Its scores measure the processor or graphics device in the test computer, not this product.

Browse Geekbench Community Results

UPS runtime and transfer testing

Compare runtime at the same measured load, transfer time and voltage regulation under controlled conditions.

A comparable third-party result for Uniti Power SPY3000RMi2U uninterruptible power supply (UPS) Double-con is not included here. See UPS runtime and testing guidance explains the relevant test or benchmark method.

At £890.04 this is the second most expensive unit in the roundup.

Product specifications
Specification	Information
Brand	Uniti Power
Price	£890.04
Rated power	3000 W
Listed product details	Uniti Power SPY3000RMi2U uninterruptible power supply (UPS) Double-conversion (Online) 3 kVA 3000 W 9 AC outlet(s)

Compatible hardware

Check against Desktop PCsCheck connected load stays within UPS wattage and outlet limits.
Check against Network switchesMatch equipment load and plug type to available UPS capacity and outlets.
Check against Replacement UPS batteriesUse a replacement battery pack specified for the exact UPS model.

What we like

3 kVA and 3000 W ratings are both listed
Nine outlets
Online double-conversion topology

What we don't like

No communication features listed
Second highest price in the roundup

Check price at PCHub

5. Vertiv Liebert GXT5 Double Online Conversion UPS -6000VA/6000W| 230V|

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Price shown £2,807.90

An online double-conversion UPS rated at 6000 VA and 6000 W, supplied with a rackmount kit and Intellislot RDU101 communication card.

The Vertiv Liebert GXT5 is an online double-conversion unit rated at 6000 VA and 6000 W, the highest ratings listed in this roundup.

It includes a rackmount kit and an Intellislot RDU101 communication card, though outlet count is not stated for this model.

Benchmark

Geekbench does not benchmark the primary function of Vertiv Liebert GXT5 Double Online Conversion UPS -6000VA/6000W| 230V|. Its scores measure the processor or graphics device in the test computer, not this product.

Browse Geekbench Community Results

UPS runtime and transfer testing

Compare runtime at the same measured load, transfer time and voltage regulation under controlled conditions.

A comparable third-party result for Vertiv Liebert GXT5 Double Online Conversion UPS -6000VA/6000W| 230V| is not included here. See UPS runtime and testing guidance explains the relevant test or benchmark method.

At £2,807.90 this is the most expensive unit in the roundup by a wide margin.

Product specifications
Specification	Information
Brand	Vertiv
Price	£2,807.90
Rated power	6000W
Listed product details	Vertiv Liebert GXT5 Double Online Conversion UPS -6000VA/6000W\| 230V\| With Rackmount Kit and Intellislot RDU101 Communication Card\| GXT5-6000IRT5UXLN

Compatible hardware

Check against Desktop PCsCheck connected load stays within UPS wattage and outlet limits.
Check against Network switchesMatch equipment load and plug type to available UPS capacity and outlets.
Check against Replacement UPS batteriesUse a replacement battery pack specified for the exact UPS model.

What we like

Highest stated VA and W rating in the roundup
Intellislot RDU101 communication card included
Rackmount kit included

What we don't like

Highest price in the roundup
Outlet count not stated

Check price at PCHub

Prices shown reflect the available listing details and can change. Check stock, delivery, compatibility and full product specifications with PCHub before ordering.