10 Best Battery Backups 2025 in the United States

The Amazon Basics Standby UPS Battery Backup offers a power capacity of 600VA/360W, which makes it suitable for desktop computers, home networks, IoT devices, and home entertainment systems. It comes with 8 outlets in total – 4 surge-protected and 4 that are both surge-protected and battery-backed. This ensures your devices remain powered during short outages and have enough time to shut down properly during longer ones.

Its compact design allows easy integration into any home or office setup, and the 5-foot cord with a right-angle plug provides flexibility in placement. One downside is that you need to ensure the total power consumption of the devices connected to the battery backup outlets stays below 80% of the unit's capacity for optimal performance.

Additionally, while it does offer automatic voltage regulation (AVR), it may not be suitable for high-powered equipment due to its limited wattage. The lack of an LCD display may also be a drawback for users who prefer real-time monitoring of UPS status. Despite these limitations, this UPS stands out for its practicality in protecting essential electronic devices from power surges and outages.

The Amazon Basics Standby UPS Battery Backup is a compact and efficient solution for protecting essential electronics during power disturbances. With a power capacity of 400VA and 255W, it is well-suited for home networks, IoT devices, and home entertainment systems. One of its main strengths is the six outlets provided—three for surge protection and three that also offer battery backup, allowing you to safeguard multiple devices simultaneously.

In terms of design, the small form factor means it can fit easily into various spaces without being obtrusive. The 5-foot cord with a right angle and offset plug is a thoughtful touch, making installation more versatile. The availability of power management software for download is a bonus, providing users with additional tools to monitor their energy use.

However, there are some limitations to consider. The total load should remain under 80% of the unit's rated capacity for optimal performance, which could restrict its use if you have multiple devices with high power demands. Also, while it provides essential protection during short outages, the runtime may not be sufficient for extended power failures, so it's not ideal for users needing long-term backup.

The Vertiv Liebert PSI5 Lithium Ion UPS is a robust uninterruptible power supply with a power capacity of 1920VA/1920W, making it suitable for protecting a range of equipment from power disruptions. Its line interactive design with automatic voltage regulation (AVR) helps maintain stable voltage levels, which is essential for sensitive electronics. The UPS outputs a sine wave, which is the cleanest form of power, ensuring compatibility with critical devices like servers and networking hardware.

With a form factor of 2U, it can be easily integrated into standard server racks, offering flexibility in installation. The unit boasts lithium-ion batteries, which last twice as long as traditional VRLA batteries, enhancing its reliability and reducing maintenance costs over its lifespan. Additionally, it offers a significant runtime of up to 8.6 minutes at full load and 19 minutes at half load, providing ample time to safely shut down connected equipment during a power outage. Recharging is quick, reaching 100% capacity in just 2.1 hours.

The UPS also comes with a 5-year standard warranty, including batteries, which underscores its durability. However, the unit is on the heavier side, weighing 52 pounds, and its dimensions (24.8 x 17.2 x 3.4 inches) may require adequate space for proper installation. It features a limited number of outlets and lacks an LCD display, which could be a drawback for users needing real-time monitoring. The Vertiv Liebert PSI5 is a dependable option for those needing a long-lasting and efficient UPS for critical applications, though it might not be the most user-friendly for those who require detailed visual interfaces.