How long will a power station run my box fan?
How long does the fan run on one charge?
How long the fan runs depends on its watts, the station's watt-hour capacity, and inverter efficiency.
This page uses the Lasko 3733 at 83 watts, as of October 5, 2026, and the BLUETTI Elite 100 mini at 1,004.8 watt-hours and 700 watts continuous, as of October 5, 2026.
Published specs
| Item | Spec | Value |
|---|---|---|
| Lasko 3733, 20 inch box fan | Load | 83 watts. Three speeds. Per-speed watts are not published, as of October 5, 2026 |
| BLUETTI Elite 100 mini | Capacity | 1,004.8 watt-hours, as of October 5, 2026 |
| BLUETTI Elite 100 mini | Output | 700 watts, as of October 5, 2026 |
| BLUETTI Elite 100 mini | Chemistry | LiFePO4, as of October 19, 2026 |
| BLUETTI Elite 100 mini | Weight | 23.6 lb, as of October 19, 2026 |
A BLUETTI Elite 100 mini at 1,004.8 watt-hours and 85% inverter efficiency runs this Lasko 3733, 20 inch box fan, for about 10.3 hours. As of October 5, 2026.
Lowe's lists the Lasko 3733 20 inch box fan at 83 watts. The owner manual lists three speeds on a household outlet and does not publish watts for each speed. Manual: https://images.thdstatic.com/catalog/pdfImages/22/224ea61f-341e-45aa-ad4b-10a50f8db3a2.pdf As of October 5, 2026.
Lowe's lists 83 watts for the Lasko 3733. The owner manual lists three speeds and does not publish watts for each speed. As of October 5, 2026.
Estimated runtime
Overnight
10.3 hours
1,004.8 watt-hours at 85% inverter efficiency is 854.1 watt-hours delivered. This load averages 83 watts. 854.1 divided by 83 is about 10.3 hours.
Assumption: inverter efficiency is 85%.
A start surge is not published for this preset. These hours are the running load only.
A clamp meter with an inrush or max-current mode, used with an AC line splitter so the clamp goes around a single conductor, can measure startup current. Multiply those amps by the volts on the line to get a rough watts figure.
AstroAI Inrush Digital Clamp Meter Multimeter 1000A TRMS 6000 Counts
Triplett ET200 AC Line Splitter and GFCI Outlet/Receptacle Tester with 5 Visual Indicators
Use a line splitter only on corded plug-in loads. Leave hardwired pumps to an electrician.
Affiliate link, I may earn a commission.
Lowe's lists 83 watts. The owner manual lists three speeds on a household outlet and does not publish watts per speed, so this preset uses that single 83 watt figure.
Worked example
Lasko 3733, 20 inch box fan on the BLUETTI Elite 100 mini (1,004.8 watt-hours) at 85% inverter efficiency. Specs in this example are as of October 5, 2026.
| Step | Figure |
|---|---|
| Running watts | 83 watts |
| Duty cycle | 100 percent of the time |
| Average watts | 83 x 1.00 = 83 watts |
| Nameplate volts | 120 volts |
| Delivered watt-hours | 1,004.8 x 0.85 = 854.1 |
| Hours | 854.1 / 83 = about 10.3 |
Result: 10.3 hours.
Assumptions
| Assumption | Value | Note |
|---|---|---|
| Inverter efficiency | 85%, as of October 5, 2026 | Starting assumption for AC output. |
| Running watts | 83 watts, as of October 5, 2026 | One figure from the Lowe's listing. Per-speed watts are not published. |
| Duty cycle | 100 percent, as of October 5, 2026 | The fan is treated as running the whole time. No speed cycle is published. |
| Start watts | Not published, as of October 5, 2026 | These hours are the running load only. |
| Elite 100 mini | 1,004.8 watt-hours, 700 watts, as of October 5, 2026 | 700 watts continuous covers an 83 watt fan. A motor start watt number is not published for the fan or used as a station claim. |
Questions
How long will the Elite 100 mini run a Lasko 3733?
About 10.3 hours at 85 percent inverter efficiency. 1,004.8 watt-hours times 0.85 is 854.1 watt-hours, divided by 83 watts, about 10.3 hours. The 83 watt figure is the single published number. Watts for each of the three speeds are not published. As of October 5, 2026.
Does this include startup current?
No. Neither the Lowe's listing nor the owner manual used here publishes start watts. The hours are the 83 watt running figure only. A clamp meter can measure startup current on a corded fan. As of October 5, 2026.
Sources
Updated .
- Lasko 3733Lowe's lists the Lasko 3733 20 inch box fan at 83 watts. The owner manual lists three speeds on a household outlet and does not publish watts for each speed. Manual: https://images.thdstatic.com/catalog/pdfImages/22/224ea61f-341e-45aa-ad4b-10a50f8db3a2.pdf As of October 5, 2026.
- BLUETTI Elite 100 miniBLUETTI lists the Elite 100 mini at 1,004.8 watt-hours and 700 watts of output, with 120 volt AC outlets on the US model. As of October 5, 2026.