Practical guide
How to Keep WiFi Running During a Blackout
When the power goes out, the fridge matters — but for anyone working from home, the router matters more. Here's the good news: networking gear sips power. A $500 power station can keep your WiFi alive for three days straight. This guide covers exactly how much power your setup draws, the runtime math, the five-minute UPS setup, and the honest caveat about your internet provider.
How much power does WiFi gear actually use?
| Device | Typical draw |
|---|---|
| Cable/DSL modem | 5–10W |
| WiFi router | 5–15W |
| Modem + router combo | 10–20W |
| Mesh node (each) | ~10W |
| Fiber ONT box | 5–10W |
Check the fine print on your devices' power bricks (look for the output wattage) or use our sizing calculator. But 12W is a safe planning number for a modem-plus-router pair.
Runtime math: days, not hours
Our standard formula: rated Wh × 0.85 ÷ watts. At 12W:
| Power station | Capacity | Router runtime (12W) |
|---|---|---|
| Small 256Wh unit | 256 Wh | ~18 hours |
| Jackery Explorer 1000 v2 | 1,070 Wh | ~3.5 days |
| Anker Solix C1000 | 1,056 Wh | ~3 days |
| BLUETTI AC180 | 1,152 Wh | ~3.4 days |
Add a laptop (65W) into the mix and a 1kWh station still covers a full workday plus the router overnight. That's the real work-from-home equation: router all day + laptop 8 hours ≈ 650Wh — comfortably inside any 1kWh station.
The five-minute UPS setup
- Plug the power station into the wall and leave it there. This is its normal state.
- Plug your modem and router into the station's AC outlets — not the wall.
- Enable UPS/EPS mode in the station's app or settings if it isn't on by default.
- Test it: unplug the station from the wall. Your devices should keep running with a switchover under 20ms — fast enough that a Zoom call won't drop.
Stations with sub-20ms switchover (the Anker Solix C1000 and Jackery Explorer 1000 v2 both qualify) are ideal for this. The switchover is quick enough that your router never reboots and your laptop never notices.
The honest caveat: your ISP might go dark too
Keeping your router powered doesn't guarantee internet. Your connection depends on your provider's neighborhood equipment — cable nodes and fiber cabinets have their own battery backups, typically lasting a few hours into an outage. If those die, your fully-powered router will broadcast WiFi with nothing behind it.
What this means in practice: for short outages (the vast majority), your provider's gear stays up and your backup keeps you online seamlessly. For multi-day regional blackouts, plan for your phone's hotspot as the fallback — which is another reason to keep phones charged off the same station.
Cheaper alternatives worth knowing
- USB-C PD power bank: if your router runs on USB-C (many newer mesh nodes do), a 100W USB-C power bank can run it directly for 10+ hours at a fraction of the cost. Check your router's input first — most traditional routers use barrel-plug 12V adapters and need AC.
- Mini UPS boxes: purpose-built router UPS units exist for $30–$60 and cover 2–4 hours. Fine for flickers; not a real outage plan.
- Small power station (~256Wh): ~18 hours of router time plus a few phone charges. A reasonable budget option if outages in your area are measured in hours, not days.
Verdict
For work-from-home continuity, a 1kWh-class station in permanent UPS mode is the right answer: three days of router time, a full workday of laptop power, and a sub-20ms switchover that keeps calls alive. The Anker Solix C1000 is our pick for this job specifically — fastest recharge when the grid flickers back, and a true UPS fast enough for a desktop PC. Just remember the ISP caveat: your router can outlast your provider's batteries, so keep the phone hotspot ready as plan B.
Related guide: Best high-capacity power banks for emergency kits — keep phones and laptops charged when the station is busy on bigger loads.
Related guide: Best Portable Power Stations for Starlink — keep satellite internet online through the outage.
Related guide: Best UPS Battery Backups for Home Offices — pure sine wave picks and the runtime math that matters.