A UPS like the APC Back-UPS BE600M1 has to be able to power your equipment for an acceptable amount of time to be worth installing. I tested one for a couple weeks with my networking equipment to see how well it performs in real-world conditions.
APC Back-UPS 600VA UPS Battery Backup (BE600M1)
Keep your office equipment safe with this APC battery backup. It has six outlets with surge protection, four of which also have backup protection to keep your important electronics powered short-term during an outage. Audio and light alarms on this APC battery backup let you know if something is wrong. 180-joule rating Absorbs a high amount of energy to adequately protect your equipment and prolong the life of the unit.
APC Back-UPS BN450M Battery Backup
APC UPS 600VA BE600M1 Battery Backup & Surge Protector Review - Legit Reviews
APC UPS Battery Backup and Surge Protector, 850VA Backup Battery Power Supply, BE850G2 Back-UPS with (2) USB Charger Ports : Electronics
APC BE600M1 Back-UPS 600 VA 330 Watts Power Supply (UPS)
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APC Back UPS Battery Back up BE600M1 600VA 7 Outlet
Reviews for APC Back-UPS 600VA Battery Backup/Surge Protector with 5 battery backup outlets, 2 surge protect outlets and 1 USB port
Stay connected for hours, not minutes. Charge and power more than one device at once. Wider outlet spacing for both high and low power devices.
APC Back-UPS BE600M1
APC Back-UPS BE600M1 Review: Efficient Battery Backup With a Built-in USB Charger
APC BACK-UPS ES 600VA 120V 1XU
APC UPS Battery Backup & Surge Protector with USB Charger, 600VA APC Back-UPS (BE600M1)
High-performance computer and electronics UPS for premium power protection. When you lose power and are running on a gaming UPS, you don't have indefinite power, just enough to lengthen that crucial window to victory.
Apc by Schneider Electric Back-UPS Pro 1500va Tower UPS, White
Designed for small and medium offices, this UPS helps keep delicate electronics protected in the event of a power spike or surge. The battery backup also keeps critical devices powered up and running if an emergency strikes, allowing you to keep going until the local power supply can be restored. Use to protect mission-critical electronics, such as routers, PCs and switches, during power outages or spikes. 6' cord allows flexible placement.
APC Back Ups Pro BN 1500VA BN1500M2