LED Lighting Runtime Planning
Plan portable energy for LED lamps or strips by counting actual input watts and selecting the correct connection route.
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Count actual input power
Use electrical input watts, not an “incandescent equivalent” brightness label. Multiply by the number of lamps and hours used within the plan.
Select AC for household bulbs connected through the inverter, USB for compatible USB lamps, or DC for a documented direct-DC setup. Connection voltage, current, polarity, and driver compatibility still require separate confirmation.
For very small AC loads, inverter idle consumption can be a meaningful share of total battery use. Compare the route assumptions rather than looking only at lamp wattage.
Group identical lights carefully
Use quantity for identical lamps with the same wattage, route, and schedule. Use separate rows when the lights run for different hours or use different brightness settings. If a strip’s rating is per metre, first establish the input requirement for the installed length and its driver; do not enter the per-metre figure as the whole installation.
A measurement at the AC plug includes the lighting power supply. Enter it on the AC route. A measurement at the DC lamp input belongs on the DC route. The model then applies the selected station conversion efficiency once.
Review small-load behavior
Check whether the station keeps the selected outlet enabled at the lighting load you expect. Automatic shutdown and outlet timers can matter even when the battery has plenty of energy remaining. These operating features are not captured by the capacity arithmetic.
Run a second plan with fewer lamps or a measured lower brightness setting if you want to see how lighting choices affect the energy budget. Do not assume that half brightness produces exactly half the electrical consumption.
Worked illustration
An illustrative five-hour lighting plan
Suppose four compatible DC lamps each draw 5 W and run for five hours. This is an input example, not a claim about a particular lamp or driver.
- Energy delivered to the devices
- 100 Wh
- Estimated nominal battery capacity required
- 123 Wh
Assumptions: full starting charge, 10% stopping reserve, 100% capacity factor, 85% AC efficiency, and 90% USB/DC efficiency. AC idle draw is 5 W for 0 hours when an AC load is present. Values are rounded for display.
Operating and startup power are intentionally unestablished in this energy illustration. Check those requirements and the actual connections before choosing equipment.
Build your own plan
The tool starts empty. Add the exact equipment you intend to use, choose the route it will connect through, and replace illustrative values with your measurements. Review Advanced settings before treating the result as a shopping requirement.
Step 2 · Check the requirements
Results
Your plan summary will appear here.
- Add each device and its time in this plan.
- Review the editable assumptions.
- Choose Calculate requirements.
No personalized result is shown until then.
Device
Related reading
Published by Portable Power Calculator. This is specification-based planning information, not a hands-on product test or electrical safety assurance.