Keeping Your Internet and Cameras Alive When the Power Goes Out
Last verified: August 2026
When the power drops, your internet usually does too — even if the cable lines are fine, your modem and router lose power. Here's how to keep Wi-Fi and cameras running.
Why the Internet Dies in an Outage
Here's the thing most people don't realize: your internet connection itself (cable or fiber) often keeps working in a short outage, but your modem and Wi-Fi router are plugged into the wall, so when the power dies, they do too — and your phone and cameras lose their connection. The devices sip very little power, so keeping them alive is easy and cheap.
The simplest solution is a small battery backup — a UPS or a mini-UPS made for networking gear — plugged in between the wall and your modem/router. It switches to battery instantly and can run that low-wattage gear for hours, sometimes overnight.
Wi-Fi security cameras are the same story: keep the router powered (and any camera base station), and battery cameras keep uploading. This is a popular add-on to the camera systems I install — the whole point is being able to watch your home when the power's out.
When to skip the DIY and just call: You want a UPS sized and installed on your networking gear · Your cameras go offline every time the power blinks · You want to watch your house during outages from your phone.
Common Questions
1 What do I actually need to keep the internet on?
- A UPS (uninterruptible power supply) or mini-UPS rated for your modem and router's small wattage.
- Plug the modem and router into the UPS's battery-backed outlets.
- That's usually enough for several hours; a portable power station gives even longer.
- Note which internet types depend on utility power at the provider's end (some may still go down in a wide outage).
2 How long will it last?
- Networking gear draws little (roughly 15–30 watts total), so even a small battery lasts a long time.
- Many small UPS units run a modem and router for several hours; larger ones or a power station can go overnight.
- Turn off anything you don't need on the battery to stretch it.
3 How do I keep my cameras recording?
- Battery-powered cameras keep working; they just need the router (and any hub/base station) powered to upload.
- Wired cameras and doorbells need their own power kept on — put the hub and router on backup.
- Cameras that record to a cloud plan will resume uploading once the connection is back.
4 Will my cell phone still get internet?
- Your phone uses the cell network, which usually stays up for a while on its own backup power.
- You can share that connection to a laptop with a personal hotspot if home internet is down.
- In a long, widespread outage, cell towers can eventually run low — don't count on it for days.
5 Is this worth it if outages are short?
- For most homes, yes — a small UPS is inexpensive and also protects gear from surges when power flickers.
- It keeps your phones, cameras, and any internet-based medical alert connected through the common brief outages.
- For our storm-prone area, it's one of the best small investments you can make.
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