Best UPS for Router and Modem (USA Guide)
Keeping your internet connection online during a power outage is critical for remote workers in the United States. Even a short outage can disconnect VPNs, drop video calls, and interrupt cloud-based work.
This guide explains the best UPS options for powering your router and modem, how long they can run, and how to choose the right one for your home or small office.
Do You Need a UPS for Your Router and Modem?
Yes. A small UPS can keep your WiFi router and modem running during power outages, allowing you to stay connected while others go offline.
For a complete overview of UPS systems for home offices, see our Best UPS for Home Office in the USA (Complete Guide) .
How Much Power Do Routers and Modems Use?
Most routers and modems in the USA consume very little power compared to computers:
- WiFi router: 8–15W
- Cable modem: 10–20W
- Fiber ONT: 15–30W
This low power usage means even small UPS units can provide long runtime.
How Long Can a UPS Power a Router and Modem?
Depending on battery size and load, a UPS can keep your internet equipment running for:
- Small UPS (600VA): 30–60 minutes
- Mid-size UPS (900VA): 1–2 hours
- Large UPS (1500VA): 2–4 hours
Best UPS for Router and Modem (USA – 2026)
- Best overall: APC BE600M1
- Best compact UPS: CyberPower ST425
- Best value UPS: CyberPower ST900U
- Best extended runtime: APC Back-UPS Pro 1500VA
All of these UPS models are compatible with standard US electrical systems (120V / 60Hz).
How to Choose the Right UPS for Internet Equipment
Battery Capacity
Even a small battery can provide long runtime for networking devices. Choose based on how long you want your internet to stay online.
Outlet Type
Ensure the UPS has battery-backed outlets (not surge-only outlets).
Noise and Size
Compact, fanless UPS models are ideal for routers placed in living spaces.
UPS vs Power Bank for Routers
While some power banks can power routers, they lack proper surge protection and voltage regulation. A UPS is safer and more reliable.
Frequently Asked Questions
Can a small UPS really power my internet?
Yes. Because routers and modems use very little power, even entry-level UPS units can keep them running for extended periods.
Will my internet work if my ISP is down?
A UPS keeps your equipment powered, but your internet will only work if your service provider infrastructure remains operational.
Is it safe to leave a UPS on 24/7?
Yes. UPS systems are designed to operate continuously and recharge automatically.
Final Thoughts
A small UPS for your router and modem is one of the easiest ways to stay connected during power outages in the USA.
For full home office protection, combine this setup with a computer UPS as explained in our complete home office UPS guide .