LED lighting: how much battery you need
LED lighting (5 bulbs) draws about 40 W (20–60 W range), runs 100% of the time and uses 200 Wh per day. Start-up surge: 40 W.
Negligible load; the mistake is forgetting halogen or incandescent bulbs still installed somewhere.
Battery needed
| Hours | Wh | Battery (Wh) | Inverter (W) |
|---|---|---|---|
| For 8 hours | 67 | 102 | 44 / 40 |
| For 24 hours | 200 | 304 | 44 / 40 |
| For 72 hours | 600 | 910 | 44 / 40 |
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Stations that fit (24 h)
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FAQ
How many watts does a LED lighting (5 bulbs) use?
Typically 40 W while running, with a range of 20–60 W depending on model and age. Start-up surge can reach 40 W.
How long will a 1000 Wh power station run a LED lighting (5 bulbs)?
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 LED lighting (5 bulbs) overnight (8 h)?
About 102 Wh of battery and an inverter rated at least 44 W continuous with 40 W surge.
Can I run a LED lighting (5 bulbs) on solar during an outage?
You need roughly 134 W of panels in winter to replace a day's use (200 Wh), charging through a station with a big enough MPPT input.
Other appliances
Inverter efficiency 88%, usable depth of discharge 90%, reserve 20%. Full method: How we calculate. source