How Long Will the Vtoman FlashSpeed 1500 Run a Box Fan?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 1548Wh (LFP) |
|---|---|
| Usable energy | 1316Wh (85% via AC outlets) |
| Continuous AC output | 1500W |
| Surge rating | 3000W |
| Box fan running watts | 75W |
| Startup watts | 100W |
| Average draw | 75W |
| Estimated runtime | 18 hours |
| Energy per day of typical use | 600Wh |
1548Wh × 0.85 = 1316Wh usable ÷ 75W average = 17.5 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your box fan and enter its real wattage.
Recharging with solar
The Vtoman FlashSpeed 1500 accepts up to 400W of solar input. In real conditions that harvests about 1.5 kWh on a sunny day (5 peak-sun hours), or about 750Wh with one 200W panel.
Solar can keep up. A box fan uses about 600Wh a day at 8 hours of use, so with enough panels and good sun the Vtoman FlashSpeed 1500 can run it indefinitely.
Tips
- A 20-inch box fan draws 50–100W depending on speed.
- You’ll still have about 1425W of AC capacity left for other devices at the same time, though they’ll share the same battery.
- The Vtoman FlashSpeed 1500 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 box fan
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| Jackery Explorer 1000 Plus | 1264Wh | 2000W | 14 hours | Yes |
| Goal Zero Yeti 1500X | 1516Wh | 2000W | 17 hours | Yes |
| Jackery Explorer 1500 v2 | 1536Wh | 2000W | 17 hours | Yes |
| Jackery Explorer 2000 Plus | 2042Wh | 3000W | 23 hours | Yes |
| EcoFlow Delta 2 Max | 2048Wh | 2400W | 23 hours | Yes |
| Anker SOLIX F2000 | 2048Wh | 2400W | 23 hours | Yes |
| Bluetti AC200L | 2048Wh | 2400W | 23 hours | Yes |
| Bluetti AC200MAX | 2048Wh | 2200W | 23 hours | Yes |
FAQ
Will the Vtoman FlashSpeed 1500 run a box fan overnight?
Yes. Eight hours uses about 600Wh, roughly 46% of the Vtoman FlashSpeed 1500’s usable capacity.
How long does the Vtoman FlashSpeed 1500 take to recharge with solar?
With its maximum 400W of solar input it refills in about 5.2 hours of strong sun. With a single 200W panel, expect about 2.1 sunny days (10 hours of full sun).