What Size Power Station for Wi-Fi and Laptops?
Estimate backup capacity for modem, router, laptops and phones during remote-work outages.
Connectivity and laptops are relatively low-power loads, making them good candidates for long battery runtime from compact power stations.
Wi-Fi and laptops are modest-watt loads, but they can run for many hours. A 1kWh-class station is often more than enough for a workday of networking and several laptop charges; the real question is how many devices must run and whether you also need monitors, desktop PCs or lighting.
What matters
- Include modem and router separately if both are required.
- Laptop charging is intermittent rather than constant.
- A small efficient inverter matters at low loads.
- Internet service itself may fail upstream during regional outages.
Decision factors that change the answer
Router/modem load
Networking gear often runs continuously at 20–40W combined.
Laptop charging
A typical laptop may use 50–100Wh per charge, but workstation-class systems can use more.
Monitors
External displays add continuous load throughout the workday.
Transfer behavior
If work cannot tolerate interruption, verify UPS/EPS switchover specifications.
How to size it
- Add network device watts.
- Estimate laptop charging Wh per day.
- Multiply continuous network watts by outage hours.
- Apply reserve and efficiency.
A 25W network stack running 24 hours uses 600Wh; two laptop charges may add a few hundred Wh more.
Worked example
A 30W network load for 10 hours uses 300Wh. Two 70Wh laptop charges add 140Wh, and a 40W monitor for 8 hours adds 320Wh: about 760Wh total before losses.
Common buying mistakes
- Backing up only the router.
- Assuming internet service survives every outage.
- Oversizing inverter output while ignoring idle consumption.
For remote work, energy duration matters more than extreme inverter output; compact 1kWh-class stations can be strong fits.
Check the underlying numbers
Use these site resources to replace generic assumptions with your own load or the source-linked data behind this guide.
Use the numbers before choosing a model
Start with your load list. The battery needs enough watt-hours for the desired runtime and enough continuous/surge watts to operate the appliances at the same time. Then check whether your recharge method can replace the energy you expect to consume.
For outage planning, we recommend keeping reserve capacity instead of designing a system that reaches 0% at the end of the forecasted outage.
Next step
Estimate battery runtime → or Build a critical-load energy budget →.