How Long Will the EcoFlow River 3 Run String Lights?
Updated 2026-10-17 · Yes
About 10 hours. The EcoFlow River 3 stores 245Wh, and string lights average about 20W. At 5 hours of use a day, one charge lasts about 2.1 days.
The numbers
| Battery capacity | 245Wh (LFP) |
|---|---|
| Usable energy | 208Wh (85% via AC outlets) |
| Continuous AC output | 300W |
| Surge rating | 600W |
| String lights running watts | 20W |
| Startup watts | 20W |
| Average draw | 20W |
| Estimated runtime | 10 hours |
| Energy per day of typical use | 100Wh |
245Wh × 0.85 = 208Wh usable ÷ 20W average = 10.4 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your string lights 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 keep up. String lights use about 100Wh a day at 5 hours of use, so with enough panels and good sun the EcoFlow River 3 can run it indefinitely.
Tips
- LED string lights for a campsite or patio use 5–25W per strand.
- You’ll still have about 280W of AC capacity left for other devices at the same time, though they’ll share the same battery.
- 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 string lights
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| EcoFlow River 2 | 256Wh | 300W | 11 hours | Yes |
| Jackery Explorer 240 v2 | 256Wh | 300W | 11 hours | Yes |
| Bluetti EB3A | 268Wh | 600W | 11 hours | Yes |
| Jackery Explorer 300 Plus | 288Wh | 300W | 12 hours | Yes |
| Anker SOLIX C300 | 288Wh | 300W | 12 hours | Yes |
| Goal Zero Yeti 500X | 505Wh | 300W | 21 hours | Yes |
| EcoFlow River 2 Max | 512Wh | 500W | 22 hours | Yes |
| Anker 535 PowerHouse | 512Wh | 500W | 22 hours | Yes |
FAQ
Will the EcoFlow River 3 run string lights overnight?
Yes. Eight hours uses about 160Wh, roughly 77% 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.