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Ranked & Reviewed by Primea Reviews

The 6 Best UPS Battery Backups for a Computer and Monitor, Ranked & Reviewed

By the Primea Editorial TeamUpdated November 3, 202610 min read6 products ranked

The short answer

The APC BR1500MS2 is the best UPS for a gaming or workstation PC with a monitor, with 900W of real capacity, pure sine wave output and a replaceable battery. The CyberPower CP1000PFCLCD is the cheaper sine wave option, the GOLDENMATE offers 800W from a lithium unit, and the APC Pro models suit ordinary office PCs.

The Primea Scoreboard

Ranked & Reviewed

01
Best Overall
APC UPS 1500VA/900W Pure Sine Wave UPS for Computer, Electronics, BR1500MS2
900W of real capacity, pure sine wave and APFC compatibility, with a replaceable battery.
Outstanding
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02
Best Sine Wave Value
CyberPower CP1000PFCLCD PFC Sinewave UPS Battery Backup and Surge Protector
PFC sine wave output, AVR and an LCD at a lower price than the APC.
Outstanding
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03
Best Lithium Pick
GOLDENMATE 1000VA/800W Lithium UPS Battery Backup & Surge Protector, Gray
A lithium 1000VA/800W unit with an unusually high watt-to-VA ratio.
Excellent
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04
Best Office Desktop
APC 1000VA/600W Pro UPS Battery Backup for Office Electronics, AVR, BX1000M
600W with AVR, rated for office electronics.
Excellent
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05
Best Compact Office
APC 850VA/510W Pro UPS Battery Backup for Office Electronics, AVR, BX850M
510W with AVR in a compact body for a basic PC and monitor.
Excellent
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06
Best Low-Power Budget
APC UPS 650VA/390W Battery Backup & Surge Protector for PC, NAS | BE650G1
390W with surge protection and a replaceable battery for a low-power setup.
Very Good
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Size a UPS by watts, not by the VA number on the front. A 1500VA label sounds generous, but the watt rating beneath it, often 60 percent of the VA, is the real ceiling. A desktop with a mid-range graphics card and a monitor can pull 300 to 500 watts under load, and a UPS that is loaded close to its limit gives only a minute or two of power and wears its battery quickly. Leave headroom of about a third.

We ranked six UPS units for a PC and monitor by real wattage, waveform, regulation, battery type and outlets. We reviewed listings, which state watts for all of these. Runtime figures are absent, and depend on load, so we do not quote any. The goal is time to save work and shut down cleanly, not hours of use.

Before you buy

What Actually Matters

Wattage headroom

Add up the PC and monitor draw and keep it under about two thirds of the watt rating. Overloading shortens runtime. Check the watt figure, not just VA.

Pure sine wave

APFC power supplies can trip on the stepped waveform of cheaper units. Pure sine avoids it. Look for sine wave in the listing.

AVR

AVR corrects voltage dips without using the battery, saving wear. Look for AVR in the specs.

Battery type

Lead-acid batteries last three to five years and are often replaceable, and lithium lasts longer but may not be user-replaceable. Check which.

Outlets

Not every outlet gives battery power. Plug the PC and monitor into battery outlets and keep printers on surge-only ones.

In-depth reviews

Our Ranked Picks, Reviewed

Best Overall

APC UPS 1500VA/900W Pure Sine Wave UPS for Computer, Electronics, BR1500MS2

Outstanding

Check price on Amazon

Our verdict: 900W of real capacity, pure sine wave and APFC compatibility, with a replaceable battery.

The BR1500MS2 offers 1500VA and 900W, a pure sine wave output that works with APFC power supplies, 10 outlets with coax and Ethernet surge protection, and a replaceable battery. It sits at $200 to $500.

It wins because a gaming PC and a large monitor can approach 600 watts, and 900W leaves headroom. Pure sine output keeps modern power supplies stable on battery. The coax and Ethernet protection cover the modem, and a replaceable battery extends its life.

Buy it for a high-performance PC. It costs the most and is bulky.

Capacity: 1500VA / 900W
Output: Pure sine wave
Outlets: 10
Battery: Replaceable

What we like

+900W real capacity
+Pure sine wave for APFC
+Coax and Ethernet protection
+Replaceable battery

Watch out for

−Most expensive here
−Large and heavy

Buy it if: Buyers with a gaming or high-performance PC plus monitor who want real wattage headroom.

Skip it if: You have a basic office PC.

Best Sine Wave Value

CyberPower CP1000PFCLCD PFC Sinewave UPS Battery Backup and Surge Protector

Outstanding

Check price on Amazon

Our verdict: PFC sine wave output, AVR and an LCD at a lower price than the APC.

The CP1000PFCLCD has a PFC sine wave output, AVR, an LCD display and multiple outlets. It costs $100 to $200. The listing gives no watt rating, so check it.

Second place goes to it because pure sine wave at this price is rare, and the LCD shows load. It suits a mid-range PC and monitor.

Buy it for an APFC PC without maximum headroom.

Output: PFC sine wave
Regulation: AVR included
Display: LCD
Price bracket: $100 to $200

What we like

+Sine wave output
+AVR included
+LCD shows load
+Lower price

Watch out for

−Watt rating not listed
−Less headroom than 1500VA

Buy it if: Buyers with an APFC PC who want pure sine without paying for maximum headroom.

Skip it if: Your PC draws a lot of power.

Best Lithium Pick

GOLDENMATE 1000VA/800W Lithium UPS Battery Backup & Surge Protector, Gray

Excellent

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Our verdict: A lithium 1000VA/800W unit with an unusually high watt-to-VA ratio.

The GOLDENMATE offers 1000VA and 800W, a lithium battery, surge protection and a compact footprint. It costs $100 to $200.

Third place fits because 800W from a 1000VA unit is a high real-power ratio, and lithium cells typically last longer than lead-acid. The listing does not name AVR or the waveform. The battery is not a user-swappable cartridge.

Buy it for more real watts in a small body. Check waveform first.

Capacity: 1000VA / 800W
Battery: Lithium
Protection: Surge protection
Form: Compact

What we like

+800W in a compact unit
+Lithium battery
+Surge protection
+Mid-range price

Watch out for

−Waveform and AVR not listed
−Lithium not user-replaceable

Buy it if: Buyers who want above-average real wattage and lithium longevity.

Skip it if: You need a stated pure sine wave.

Best Office Desktop

APC 1000VA/600W Pro UPS Battery Backup for Office Electronics, AVR, BX1000M

Excellent

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Our verdict: 600W with AVR, rated for office electronics.

The BX1000M provides 1000VA and 600W with AVR, multiple outlets and an office electronics rating. Street pricing is $100 to $200.

The fourth spot fits since 600W covers a normal office desktop and monitor. It is not meant for a high-performance build.

Buy it for office PCs.

Capacity: 1000VA / 600W
Regulation: AVR included
Rated for: Office electronics
Price bracket: $100 to $200

What we like

+AVR included
+600W for an office PC
+Established brand
+Multiple outlets

Watch out for

−Not for gaming PCs
−Sine wave not stated

Buy it if: Buyers with a standard office desktop and monitor.

Skip it if: You run a high-performance PC.

Best Compact Office

APC 850VA/510W Pro UPS Battery Backup for Office Electronics, AVR, BX850M

Excellent

Check price on Amazon

Our verdict: 510W with AVR in a compact body for a basic PC and monitor.

The BX850M offers 850VA and 510W, AVR, a compact form and an office rating. It costs $100 to $200.

Fifth place goes to it because it is the smallest of the pair, a basic PC and monitor fit within 510W, but there is little headroom.

Buy it for a basic office PC.

Capacity: 850VA / 510W
Regulation: AVR included
Form: Compact
Rated for: Office electronics

What we like

+Compact
+AVR included
+Fits a basic PC
+Established brand

Watch out for

−Little headroom
−Priced near the 1000VA

Buy it if: Buyers with a basic office PC and monitor on a budget.

Skip it if: You may upgrade your PC.

Best Low-Power Budget

APC UPS 650VA/390W Battery Backup & Surge Protector for PC, NAS | BE650G1

Very Good

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Our verdict: 390W with surge protection and a replaceable battery for a low-power setup.

The BE650G1 provides 650VA and 390W, a standard replaceable battery and surge protection. It costs $100 to $200.

It ranks last because 390W suits only a low-power PC and a small monitor, and AVR is not listed.

Buy it for a laptop dock or mini PC.

Capacity: 650VA / 390W
Battery: Standard replaceable
Protection: Surge
Use: PC and NAS

What we like

+Replaceable battery
+Surge protection
+Low price
+Compact

Watch out for

−Only 390W
−AVR not listed

Buy it if: Budget buyers with a low-power PC and monitor setup.

Skip it if: You have a discrete graphics card.

Methodology

How We Ranked These

Real wattage

We compared watt ratings, not VA, against typical PC and monitor loads.

Output waveform

We rewarded pure sine wave for APFC power supplies.

Regulation

We checked for AVR, which smooths brownouts without using the battery.

Battery type

We compared replaceable lead-acid and lithium batteries.

Outlets and value

We counted outlets and weighed price brackets.

Every Primea Score uses the same weights: Performance 30% · Build & Materials 20% · Everyday Usability 20% · Value 20% · Owner Satisfaction 10%. Full scoring rules

Buyer's guide

How to Pick the Right One for You

By PC Type

The PC's power draw decides the size.

Your PC	Our pick
Gaming or workstation	APC UPS 1500VA/900W Pure Sine Wave BR1500MS2
Mid-range with PFC supply	CyberPower CP1000PFCLCD PFC Sinewave UPS
Standard office desktop	APC 1000VA/600W Pro BX1000M
Low-power or mini PC	APC UPS 650VA/390W BE650G1

By Budget

Spend	Our pick
$100 to $200, sine wave	CyberPower CP1000PFCLCD PFC Sinewave UPS
$100 to $200, office	APC 1000VA/600W Pro BX1000M
$100 to $200, lithium	GOLDENMATE 1000VA/800W Lithium UPS
$200 to $500	APC UPS 1500VA/900W Pure Sine Wave BR1500MS2

Lithium vs Lead-Acid

Lithium

Lasts longer and is compact, but often not user-replaceable. Pick: GOLDENMATE.

Lead-acid

Replaceable cartridge every few years, widely stocked. Picks: the APC models.

Choose lead-acid for easy swaps and lithium for longevity.

By Waveform

Your power supply	Our pick
APFC	APC UPS 1500VA/900W Pure Sine Wave BR1500MS2
APFC, mid-range	CyberPower CP1000PFCLCD PFC Sinewave UPS
Standard	APC 850VA/510W Pro BX850M
Unknown, small	APC UPS 650VA/390W BE650G1

For Gaming Rigs Specifically

Look for

900W or more of real capacity, pure sine wave and enough outlets for monitors.

In this ranking

The APC BR1500MS2 is the only one with 900W and sine wave.

When to Spend More

Spend more if

Your PC is power-hungry. The BR1500MS2 earns the $200 to $500.

Save if

Your PC is basic. The BX1000M is $100 to $200.

Questions

Frequently Asked Questions

How long will it run my PC?+

Only minutes under load. It is meant for a clean shutdown.

What is the common mistake?+

Sizing by VA. Use watts and leave a third spare.

Is a UPS worth it for a desktop?+

Yes if you lose work to power flickers. It also protects against surges.

How do I connect it?+

Plug the UPS into the wall, connect the PC and monitor to battery outlets and attach the USB cable for shutdown.

Can I plug a printer in?+

Use surge-only outlets for laser printers, as they draw heavy power.

When should I replace the battery?+

After three to five years or when the unit alarms.

Final take

The APC BR1500MS2 is the best UPS for a PC and monitor, with 900W and pure sine output. The CyberPower CP1000PFCLCD is the cheaper sine wave option, and the APC BX models suit office desktops.

More Ranked & Reviewed Guides

The 6 Best UPS Battery Backups for NAS Devices, Ranked & Reviewed The 6 Best UPS Battery Backups for Workstations and Render Rigs, Ranked & Reviewed The 6 Best UPS Battery Backups With AVR for Brownouts and Dirty Power, Ranked & Reviewed