How Long Will the EcoFlow River 3 Run a Wi-Fi Router and Modem?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 245Wh (LFP) |
|---|---|
| Usable energy | 225Wh (92% via 12V/USB DC output) |
| Continuous AC output | 300W |
| Surge rating | 600W |
| Wi-Fi router and modem running watts | 20W |
| Startup watts | 20W |
| Average draw | 20W |
| Estimated runtime | 11 hours |
| Energy per day of typical use | 480Wh |
245Wh × 0.92 = 225Wh usable ÷ 20W average = 11.3 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your Wi-Fi router and modem and enter its real wattage.
Recharging with solar
The EcoFlow River 3 accepts up to 110W of solar input. In real conditions that harvests about 413Wh on a sunny day (5 peak-sun hours).
Solar can’t fully keep up. A Wi-Fi router and modem uses about 480Wh a day at 24 hours of use, more than the EcoFlow River 3’s best-case solar harvest. Solar will stretch the runtime but not sustain it.
Tips
- Keeping internet up during an outage costs very little power, as long as your ISP's equipment down the street still has power too.
- Running it from the EcoFlow River 3’s DC port instead of the AC outlet avoids inverter losses: about 17Wh more usable energy.
- The EcoFlow River 3 uses LiFePO4 (LFP) cells, rated for thousands of cycles, so running it down daily won’t wear it out quickly.
Other power stations running a Wi-Fi router and modem
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| EcoFlow River 2 | 256Wh | 300W | 12 hours | Yes |
| Jackery Explorer 240 v2 | 256Wh | 300W | 12 hours | Yes |
| Bluetti EB3A | 268Wh | 600W | 12 hours | Yes |
| Jackery Explorer 300 Plus | 288Wh | 300W | 13 hours | Yes |
| Anker SOLIX C300 | 288Wh | 300W | 13 hours | Yes |
| Goal Zero Yeti 500X | 505Wh | 300W | 23 hours | Yes |
| EcoFlow River 2 Max | 512Wh | 500W | 24 hours | Yes |
| Anker 535 PowerHouse | 512Wh | 500W | 24 hours | Yes |
FAQ
Will the EcoFlow River 3 run a Wi-Fi router and modem overnight?
Yes. Eight hours uses about 160Wh, roughly 71% of the EcoFlow River 3’s usable capacity.
How long does the EcoFlow River 3 take to recharge with solar?
With its maximum 110W of solar input it refills in about 3 hours of strong sun. A single 200W panel is enough to max out its solar input.