Language and regionEnglish · United StatesUS
Backup power for internet

Keep Wi-Fi online when the power goes out.

Choose every powered part of the connection. The calculator sizes the battery, shows a realistic runtime target and keeps the provider and emergency-communications boundary visible.

Interactive backup plan

How long should your internet keep working?

Start with a recognizable setup. Replace the estimate with a wall-outlet measurement when connectivity matters.

Don’t know the wattage? Find your deviceSearch an exact model or choose one of 27 quick device types.
Model search + quick estimates

Start with a brand, model or device type.

Exact models show their source. If the model is not indexed yet, use an editable category estimate instead.

How can I measure it? →
Browse exact modelsChoose a category and then a brand. Or type a model above.
Quick device types27 recognizable starting points; this selector deliberately stays compact.

8 of 27 results shown · search or filter to narrow the list

Connectivity

Starlink Mini

Manufacturer-sourced range
Typical range
25–40 W
Starting value
40 W
Brief peak
60 W

Check and edit these values once you have a nameplate or measurement.

Connectivity

Wi-Fi router + modem

Editable category estimate
Typical range
12–25 W
Starting value
18 W
Brief peak
25 W

Check and edit these values once you have a nameplate or measurement.

Work & charging

Phone charging

Editable category estimate
Typical range
5–20 W
Starting value
15 W
Brief peak
20 W

Check and edit these values once you have a nameplate or measurement.

Work & charging

Laptop workstation

Editable category estimate
Typical range
45–100 W
Starting value
65 W
Brief peak
100 W

Check and edit these values once you have a nameplate or measurement.

Work & charging

Desktop computer + monitor

Editable category estimate
Typical range
150–500 W
Starting value
250 W
Brief peak
500 W

Check and edit these values once you have a nameplate or measurement.

Work & charging

Camera or drone charging

Editable category estimate
Typical range
40–200 W
Starting value
120 W
Brief peak
200 W

Check and edit these values once you have a nameplate or measurement.

Cooling

12V compressor fridge — daily average

Editable category estimate
Typical range
15–35 W
Starting value
22.5 W
Brief peak
120 W

Check and edit these values once you have a nameplate or measurement.

Cooling

Home refrigerator — daily average

Editable category estimate
Typical range
25–60 W
Starting value
40 W
Brief peak
600 W

Check and edit these values once you have a nameplate or measurement.

Target: 10,000 checked modelsThe model catalog is being populated source by source. Another 50 outage-device estimates are available through search only, while the 27 quick choices stay calm and compact.
Connection method
DC is safe only when output voltage, current capacity, polarity and connector all match the exact equipment.
Your network32 W · 12 hoursFiber and mesh
Calculated minimum battery480 WhIncludes the selected conversion path
Safer capacity target576 Wh+20% reserve · A power station can suit this longer runtime.
Product selection remains closed

Use the capacity result before choosing hardware.

No United States model is recommended here until its exact 120V/60Hz execution, safety certification, supplier, delivery, warranty and return path have been verified.

Calculation: required battery = load × runtime ÷ 80%, followed by a 20% reserve. Actual runtime changes with standby draw, temperature, power-saving modes and equipment behavior. Test the exact setup before relying on it.

Choose the right type

Three ways to protect the same connection.

The largest battery is not automatically the best choice. Match the equipment, runtime and exact connections.

SMALLEST

Regulated DC mini UPS

For suitable equipment with known output voltage, current capacity, polarity and connector.

  • Low conversion loss
  • Quiet and compact
  • Every electrical detail must match
Useful for: a small, verified network load
LONGEST RUNTIME

Power station

More energy for long outages and charging, but often larger than Wi-Fi alone requires.

  • Long runtime and multiple outlets
  • Can support other devices
  • Test changeover and low-load mode
Useful for: long or broader backup plans
Test before relying on it

Check the whole chain.

  1. 01

    Disconnect utility power

    Confirm every required ONT, modem, router, switch and mesh point remains online.

  2. 02

    Wait beyond the low-load timer

    Some power stations may later switch off a small network load.

  3. 03

    Keep an alternate communications path

    Local battery power cannot prevent a provider outage. Keep a charged mobile phone, power bank and emergency communications plan.

  4. 04

    Label every DC lead

    Record voltage, current capacity, polarity and connector. A matching shape is not electrical proof.

Complete the setup

Turn the calculation into a tested system.

Official United States guidance

Plan for network failure as well as battery runtime.