Printable Power Budget Workbook
This power budget workbook is for planning battery runtime for small systems, backup setups, RVs, and off-grid loads. The sheet includes a load list with columns for Load, Power W, Hours per day, Qty, and Wh per day, plus example rows like LED lights, phone charging, and a 12 V fridge. Daily energy and average current calculate automatically, and a battery capacity field below shows runtime. It also includes days of autonomy, based on usable battery energy divided by daily consumption with no recharging.
Free printable · PDF
- 1 page
- US Letter, landscape — choose “Fit to page” for A4
- PDF, 50 KB
Free for personal, family and classroom use.
Start by listing each load, then enter watts, hours per day, and quantity. Check the calculated daily watt-hours and average current, then enter battery capacity to see how long the battery can run the loads. Use the days of autonomy result to compare battery size against daily demand.
Good for
- Estimate battery runtime for a camper van
- Compare daily loads before buying a battery
- Check backup power needs for small devices
Tip: Print in landscape so the load columns stay easy to read and fill in.
2 files · XLSX, PDF, DOCX
Get every sheet: Battery Runtime & Power Budget Workbook
This sheet plus 1 more in one download, with the editable Excel and Word files. Build a full power budget for a device, camper or off-grid setup: every load, its duty cycle and the battery size you need.
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