APC BK500EI

Overview

The APC BK500EI is a tower uninterruptible power supply (UPS) designed to provide 500 volt-amperes (VA) or 300 watts of backup power for devices operating on a 230-volt mains supply. It ensures that desktop computers, modems, routers, small servers, or point-of-sale terminals remain powered long enough to save work and shut down safely during power outages. Its compact tower design and 6.3-kilogram weight make it suitable for home offices and small workspaces.

Key features

• Provides battery backup and surge protection to three IEC C13 outlets, with an additional outlet offering surge protection only for peripherals that do not require runtime support.
• Internal surge suppression rated at 310 joules protects connected equipment from voltage spikes caused by storms or utility fluctuations.
• LED status indicators and audible alarms keep you informed about power conditions, battery capacity, and maintenance needs.
• USB and serial communication ports enable connection to a PC for power management, automated safe shutdowns, energy monitoring, and self-testing through APC software.
• User-replaceable battery cartridge accessible from the front allows easy maintenance without removing the unit from service.
• Automatic self-testing and intelligent charging technology extend battery life and provide advance warning when replacement is necessary.
• Resettable circuit breaker allows quick recovery from overload events without the need for service calls.
• Compact tower form factor fits comfortably under desks or on shelves, making it practical for small office or home office environments.
• Backed by a two-year manufacturer warranty for added reliability and peace of mind.

Key specs

• Battery backup capacity: 500 VA / 300 W
• Input voltage: 230 V
• Outlets: Four IEC C13 (three with battery backup and surge protection, one with surge protection only)
• Surge suppression rating: 310 joules
• Communication ports: USB and serial
• Weight: 6.3 kilograms
• Form factor: Tower
• Warranty: Two years

Connectivity and compatibility

The UPS offers both USB and serial ports to connect with a PC, allowing you to use APC’s power management software. This enables automated system shutdowns during extended outages, energy usage monitoring, and scheduled self-tests to maintain optimal performance. The four IEC C13 outlets accommodate a variety of standard computer and networking equipment, making it easy to protect your essential devices in one place.

Installation and setup

Setting up the BK500EI is straightforward thanks to its tower design and compact footprint. It fits neatly under a desk or beside your workstation without taking up much space. The front-accessible battery cartridge simplifies maintenance, allowing you to replace the battery without disconnecting your equipment or moving the UPS. The resettable circuit breaker helps you quickly recover from overloads without professional assistance.

Ideal uses and environments

This UPS is well suited to small office and home office setups where protecting critical devices like desktop computers, routers, and point-of-sale terminals is essential. It provides enough backup power to save work and shut down safely during outages, making it a reliable choice for professionals who need uninterrupted access to their systems. Its surge protection also guards sensitive electronics against damaging power spikes common in residential and small business environments.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

Learn more

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more