Ceiling fan: how much battery you need
Ceiling fan draws about 40 W (15–75 W range), runs 100% of the time and uses 320 Wh per day. Start-up surge: 75 W.
A ceiling fan is the cheapest way to stay cool on battery. Champion lists 15–75 W running; we use the middle for energy and the top starting figure (75 W) for the peak.
Battery needed
| Hours | Wh | Battery (Wh) | Inverter (W) |
|---|---|---|---|
| For 8 hours | 107 | 162 | 44 / 75 |
| For 24 hours | 320 | 485 | 44 / 75 |
| For 72 hours | 960 | 1455 | 44 / 75 |
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Stations that fit (24 h)
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FAQ
How many watts does a Ceiling fan use?
Typically 40 W while running, with a range of 15–75 W depending on model and age. Start-up surge can reach 75 W.
How long will a 1000 Wh power station run a Ceiling fan?
About 16.5 hours on the clock, allowing for the 100% duty cycle, inverter losses and a 20% reserve.
What size power station do I need for a Ceiling fan overnight (8 h)?
About 162 Wh of battery and an inverter rated at least 44 W continuous with 75 W surge.
Can I run a Ceiling fan on solar during an outage?
You need roughly 214 W of panels in winter to replace a day's use (320 Wh), charging through a station with a big enough MPPT input.
Other appliances
1 Approximate values: estimated from motor or heater power and typical figures published online, not from a manufacturer chart. Check your appliance label.
Inverter efficiency 88%, usable depth of discharge 90%, reserve 20%. Full method: How we calculate. source