Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Independent energy/ CALCULATOR
Battery autonomy
Convert a daily load into nominal battery capacity with stated losses.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Daily AC energy demand (kWh/day)
- Energy to be delivered to loads.
- Autonomy without charging (days)
- Selected scenario, not guaranteed duration.
- Permitted usable fraction (%)
- Use manufacturer limits and your planned reserve.
- Battery-to-load efficiency (%)
- Assumed discharge delivery efficiency.