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Rectangular black tower UPS with six front outlets and USB port

APC

APC Back-UPS BK500 500VA 300W UPS

SKU CH-RA67-3QMXM MPN BK500

Battery backup delivers 500 VA and 300 W with six NEMA 5-15R outlets, USB management, RJ-45 surge protection and a user-replaceable RBC2 battery

  • AC input voltage98–140 V
  • Input line frequency50/60 Hz +/- 3 Hz (auto sensing)
  • Power inputNEMA 5-15P
  • Volt-ampere rating500 VA
  • Power rating300 W
  • Voltage output120 V
  • 500 VA / 300 W keeps essentials running during outages
  • 6 NEMA 5-15R outlets provide battery backup and surge protection
  • USB port enables automatic shutdown via management software
  • 480-joule surge rating guards connected equipment from spikes
  • User-replaceable RBC2 battery extends unit life after depletion

Product identity

The APC Back-UPS BK500 is a 500 VA standby UPS delivering 300 W of battery-backed power for desktop computers, networking gear and home-office peripherals. It connects to a 120 V mains supply through a NEMA 5-15P plug and provides six NEMA 5-15R outlets.

Bundled accessories

Three outlets supply battery backup with surge protection while the other three provide surge-only protection for less critical loads. A USB port and included cable enable communication with the supplied management software on CD, and RJ-45 pass-through protects Ethernet or fax lines from transients. Cord-management straps help keep cabling tidy.

Suitability

This unit suits users who need a few minutes of runtime to save work and shut down a single workstation or router during brief outages. It is not sized for extended runtime, high-wattage workstations, multi-monitor setups or equipment requiring pure sine-wave output.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $133.99
Cheaper than about 87% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameAPC
Product lineBack-UPS
Model nameBK500
Ports & slots
Communication portsUSB
Protected data linesRJ-45 Ethernet /Fax protection
Power
AC input voltage98–140 V
Input line frequency50/60 Hz +/- 3 Hz (auto sensing)
Power inputNEMA 5-15P
Volt-ampere rating500 VA
Power rating300 W
Voltage output120 V
AC output frequency50/60 Hz +/- 3 Hz
Power outlets6
Runtime on battery2.4 minutes
Battery charge time8 hour(s)
Replacement batteryRBC2
Surge protection rating480 Joules
Size & build
Product dimensions6.5 in × 3.6 in × 11.2 in
Product weight13.8 lb (6.26 kg)
Shipping weight6.24 kg
Package size361 × 234 × 185 mm
In the box
In the boxBK500 UPS
RJ11 Cable
Driver Disk
RJ45 To USB Cable
User Manual
Environment & compliance
Regulatory approvalscUL Listed, California (CEC) Battery Charger, ENERGY STAR (USA), FCC Part 15 Class B, Industry Canada, UL 1778
Software
Control softwareYES

Questions about this item

How often will the RBC2 battery need replacing?

The user-replaceable RBC2 battery typically lasts three to five years; when runtime drops below the rated 2.4 minutes you simply swap the cartridge without tools.

What limits continuous load before the unit shuts down?

The 300-watt / 500-VA rating is the hard ceiling — exceed it and the UPS will trip to protect itself and your equipment.

How much heat or noise does it produce during all-day operation?

As a standby topology unit it runs silent with no fan while on mains power; only during battery events will you hear a brief alarm beep.

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