Examples
Examples
Try the starting example
- Devices JSON [[current amps,hours per day],...]
- [[2,5],[0.5,24],[5,1]]
- Nominal bus voltage (V)
- 12
- Usable stored energy (Wh)
- 600
- Daily charge use (Ah/day)
- 27
- Daily energy use (Wh/day)
- 324
- Ideal reserve duration (days)
- 1.851852
Try another scenario
- Devices JSON [[current amps,hours per day],...]
- [[3,5],[0.5,24],[5,1]]
- Nominal bus voltage (V)
- 12
- Usable stored energy (Wh)
- 600
- Daily charge use (Ah/day)
- 32
- Daily energy use (Wh/day)
- 384
- Ideal reserve duration (days)
- 1.5625
Calculation method
Calculation method
Daily charge use (Ah/day)
Daily Ah=sum I×hours; Wh=Ah×voltage; endurance=usableWh/dailyWh.
Daily energy use (Wh/day)
Daily Ah=sum I×hours; Wh=Ah×voltage; endurance=usableWh/dailyWh.
Ideal reserve duration (days)
Daily Ah=sum I×hours; Wh=Ah×voltage; endurance=usableWh/dailyWh.
Symbols and units
- a
- Devices JSON [[current amps,hours per day],...]
- b
- Nominal bus voltage (V)
- c
- Usable stored energy (Wh)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Constant voltage and measured current; losses/temperature and discharge-rate effects excluded. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Constant voltage and measured current; losses/temperature and discharge-rate effects excluded.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.