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APC 700VA/420W Backup Battery UPS for Computers, Wi-Fi Routers | BR700G | Back-UPS for PCs & home electronics — battery backup, AVR, surge protection, compact design, User Replaceable Battery
APC

APC 700VA/420W Backup Battery UPS for Computers

Bottom line: The APC 700VA/420W Backup Battery UPS for Computers ($172.12 on Amazon as of 2026-10-21 04:12 UTC): Up to 39 min runtime at 100W load, per APC's rating; main trade-off: only 3 of the 6 outlets are battery-backed; 3 are surge-only.

$172.12

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Buy on Amazon — $172.12 Also on eBay → Compare to similar power protection

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.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 39 min runtime at 100W load, per APC's rating
  • ✓ AVR corrects brownouts from 88V without draining the battery
  • ✓ Active PFC compatible for modern gaming PC power supplies
  • ✓ Coaxial and Ethernet surge protection, not just AC outlets
  • ✓ LCD shows battery level, load, and estimated runtime

Cons

  • ✗ Only 3 of the 6 outlets are battery-backed; 3 are surge-only
  • ✗ 420W ceiling is too low for a high-draw gaming PC plus monitor
  • ✗ RBC17 replacement battery is sold separately
  • ✗ 700VA/420W means runtime drops sharply above a 100W load

Manufacturer description

The APC Back-UPS BR700G gives you 700VA/420W of battery backup for the gear that can't afford a flicker: your PC, Wi-Fi router, modem, NAS, DVR, and external drives. APC rates it for up to 39 minutes of runtime at a 100W load, which is enough to save your work and shut down cleanly during an outage — or ride out the brief blips entirely. Six outlets split the job: three battery-backed for essentials, three surge-only for peripherals, plus coaxial and Ethernet surge protection for the lines that carry spikes into your setup. Automatic voltage regulation is what separates the BR700G from a…

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SpecPicks Verdict

SpecPicks scored APC 700VA/420W Backup Battery UPS for Computers using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. APC'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.

Frequently Asked Questions

How long will the BR700G keep my PC running during an outage?

APC rates it at up to 39 minutes at a 100W load. Runtime shrinks as load climbs toward the 420W ceiling, so a PC plus monitor drawing 250W will get far less. Treat it as enough time to save and shut down cleanly.

Can I plug my gaming PC into this UPS?

Yes, if it draws under 420W. The BR700G is Active PFC compatible, so it works with modern PC power supplies that older UPS units can struggle with. High-wattage builds with a 5090-class GPU will exceed the 420W limit.

Are all six outlets battery-backed?

No. Three outlets provide battery backup plus surge protection for essentials like your PC and router, and three are surge-only for peripherals such as printers or speakers. There is also built-in coaxial and Ethernet surge protection.

What does automatic voltage regulation actually do?

AVR boosts low voltage (down to 88V brownouts) and trims high voltage (+/-13% swings) back to a stable 120V without switching to battery. That protects your gear during sags and keeps the full battery in reserve for actual blackouts.

Can I replace the battery myself when it wears out?

Yes. The BR700G uses a user-replaceable RBC17 cartridge, sold separately, so you can swap it without replacing the whole unit. APC lists a 3-year warranty and equipment protection; check the product listing for current terms and coverage limits.

Key Features

  • 700VA / 420W RELIABLE BACKUP POWER: Delivers short-term battery power to keep essential devices powered during blackouts, surges, and unexpected power interruptions
  • STAY CONNECTED WHEN IT MATTERS MOST: Provides up to 39 minutes of backup runtime at a 100W load—keeping computers, TVs, DVRs, Wi-Fi routers, modems, external drives, NAS systems, and smart home devices powered during outages
  • SIX PROTECTED OUTLETS: Power your entire setup with 3 battery backup outlets for essential devices, plus 3 surge-only outlets for peripherals-plus built-in coaxial and Ethernet surge protection for added peace of mind
  • AUTOMATIC VOLTAGE REGULATION (AVR): Corrects low voltage brownouts (88V+) and surges (+/-13%) without draining battery-boosts or trims to stable 120V. Extends runtime for blackouts; Active PFC compatible for gaming PCs
  • REPLACEABLE BATTERY & ENERGY STAR UPS: User-replaceable battery (RBC17, sold separately) for zero-downtime swaps. ENERGY STAR certified for 92%+ efficiency, cutting energy costs vs standard UPS units
  • ENHANCED PROTECTION FOR CONNECTED ELECTRONICS: Supported by a 3-Year Warranty and $75,000 Equipment Protection, offering enhanced coverage for connected devices and added assurance against power-related damage

Full Specifications

BrandAPC
Color3x NEMA 5-15R (Battery Backup)
Weight700g
Runtime3 minutes
Voltage120 volts
Wattage420 watts
Amperage15 A
Unit Count1 Count
Form FactorTower
ConnectivityWiFi
Model NumberBR700G
Input Voltage120 volts
Maximum Power420 watts
Built-In MediaUSB Cable, User Manual
Connector Type3 x NEMA 5-15R
Output Current3.75 A
Output Voltage120 volts_of_alternating_current
Output Wattage420 watts
Frequency Range50/60 Hz (± 3 Hz)
Item Dimensions17.32 x 10.08 x 5.67 inches
Full listing titleAPC 700VA/420W Backup Battery UPS for Computers, Wi-Fi Routers | BR700G | Back-UPS for PCs & home electronics — battery backup, AVR, surge protection, compact design, User Replaceable Battery

Ready to buy?

APC 700VA/420W Backup Battery UPS for Computers, Wi-Fi Routers | BR700G | Back-UPS for PCs & home electronics — battery backup, AVR, surge protection, compact design, User Replaceable Battery 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.

Buy on Amazon — $172.12

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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APC 700VA/420W Backup Battery UPS for Computers, Wi-Fi Routers | BR700G | Back-UPS for PCs & home electronics — battery backup, AVR, surge protection, compact design, User Replaceable Battery
$172.12
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