Project electric bus battery state of health from energy throughput and time. Enter usable capacity, annual discharged energy, current health, and your own cycle and calendar fade assumptions to compare operating scenarios.
Projected state of health is the estimated share of original usable capacity remaining at the end of the period. Remaining kWh translates that percentage into usable energy.
Battery chemistry, temperature, charge window, power demand, storage SOC, maintenance, and the manufacturer warranty can materially change real degradation.
The default case converts total discharged energy into equivalent full cycles, applies the entered loss per cycle, adds calendar loss, and subtracts both from current state of health.
The formula section identifies each driver. Change one input at a time to see its effect while holding the others constant.
Yes, but rated values may reflect controlled test conditions. Measured capacity, consumption, session, or charging data usually gives a more representative planning result.
Use measured outlet and battery energy when available. Otherwise, treat the loss or efficiency field as an explicit scenario assumption rather than a universal value.
Temperature, battery controls, equipment limits, riding conditions, maintenance, and measurement timing can all change the outcome.
No. It is a planning estimate based on the values entered and does not replace vehicle, battery, charger, or warranty documentation.
| Variable | Meaning |
|---|---|
| Equivalent full cycle | Total discharged energy divided by usable capacity |
| Cycle fade | User assumption per equivalent full cycle |
| Calendar fade | User assumption for time-related loss per year |