10 Best Uninterrupted Power Supplies For WiFi Routers 2026 in the United States

The Amazon Basics UPS Battery Backup & Surge Protector 400VA/255W is a compact and reliable standby uninterruptible power supply, designed to protect home networks, IoT devices, and entertainment systems during power outages. With a battery capacity of 400VA/255W, it can provide backup power for short durations and ensure devices shut down safely during longer outages.

This UPS features six outlets, three of which offer both surge protection and battery backup, while the remaining three provide surge protection only. Its small size and lightweight design (3.8 pounds) make it easy to integrate into any home or office setup, and the 5-foot cord with a right-angle plug adds convenience for placement in tight spaces. The product includes downloadable power management software, although users should ensure their devices' total power consumption stays below 80% of the unit's capacity for optimal performance.

One drawback is its limited runtime, which may not be sufficient for extended outages, but it is adequate for short-term power interruptions. Despite this minor limitation, the UPS's surge protection capabilities and reliable performance make it a good option for those looking to protect their Wi-Fi routers and other essential devices from power-related issues.

The Vertiv Liebert PSI5 Lithium-Ion UPS is a powerful backup power solution, delivering up to 3000VA/2700W, making it one of the highest capacity units in a compact form. Its lithium-ion battery offers a much longer lifespan—up to three times longer than traditional batteries—meaning fewer replacements and less maintenance over time. The UPS features a versatile short-depth design that fits well in smaller or wall-mounted racks, and it can be used as either a rack or tower unit, which is handy if your setup is unique or limited on space. It also comes with five years warranty covering both the UPS and its batteries, which adds peace of mind. The product includes surge protection to guard your equipment against power spikes, an important feature for safeguarding your network gear.

This unit is relatively heavy at 68 pounds and could be overkill if you only need to protect a simple home router or small setup—it's more suited for small business or professional environments with higher power demands. The UPS contains one lithium-ion battery, so runtime depends heavily on the load. This UPS provides reliable, long-lasting backup power for a demanding router setup or network rack, but it might be more than what casual home users require.

The EATON 9PX3000GLRT is a robust uninterrupted power supply (UPS) designed primarily for demanding environments, which might be more than what a typical home WiFi router needs. It features a double-conversion online technology that ensures a clean and stable power output, which is excellent for protecting sensitive equipment against power fluctuations. The battery uses reliable lead-acid AGM cells, known for durability, and the unit includes a full system self-test at startup and every 30 days to ensure readiness.

Weighing over 60 pounds and with a large footprint (23.8 x 17.3 x 3.4 inches), this UPS is quite bulky and might be challenging to place in a small home setup. It offers a 208-volt output and comes with a detachable 6-foot power cord. Given its size, weight, and likely capacity, this UPS is better suited for small offices or server rooms rather than just a home WiFi router.

For someone needing heavy-duty, reliable power backup with advanced features, it represents a strong choice. In contrast, for simple home use, it may be oversized and less convenient compared to smaller, lighter models.