10 Best Battery Backups 2025 in the United States

The Vertiv Liebert GXT5 UPS is a robust choice for those needing reliable battery backup, particularly in sensitive environments like servers and networking. With a power capacity of 2000VA and 1800W, it provides ample support for essential devices without risking overload. Its online double conversion technology ensures a consistent sine wave output, which is crucial for maintaining the health of connected electronics.

One of its standout features is the colored LCD display, which offers a user-friendly interface for monitoring the UPS's status and battery life. Its programmable outlets allow for tailored management of connected devices, optimizing battery use based on your needs. The unit is also Energy Star certified, demonstrating higher efficiency, especially when running in eco-mode, which can contribute to lower energy costs over time.

The UPS is quite heavy at 58.7 pounds, making it less portable if you need to move it frequently. While it excels in providing power, the sealed lead-acid battery may require eventual replacement, which can be an added cost. Additionally, while the updated firmware reduces fan noise, some users may still find the unit’s noise level higher than desired in quiet environments. The Liebert GXT5 is ideal for anyone who prioritizes high power capacity and reliability, such as small businesses, data centers, or home offices with critical equipment. However, if you're looking for a lightweight or extremely quiet solution, you might want to explore other options.

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.

The Liebert PSI5 Lithium-Ion UPS is a strong choice for anyone needing reliable battery backup for sensitive electronics or small office setups. It offers 1500VA and 1350W output power, meaning it can handle moderate to high power loads such as computers, networking equipment, and other critical devices. Its lithium-ion battery is a plus because this type tends to last longer and recharge faster than traditional lead-acid batteries. The UPS is relatively compact, measuring about 8.7 x 6.3 x 15.6 inches and weighing 31 pounds, so it’s fairly easy to place on or under a desk without taking up too much space.

Safety is well-considered, with features like surge protection and a sine wave output, which helps ensure clean power delivery and reduces the risk of damage to your devices. While the lithium-ion battery is advanced, such UPS units can be pricier than more basic models. For users looking for a durable, efficient, and moderately powerful UPS with modern battery technology, the Liebert PSI5 makes a solid option for their needs.