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Case I_cc: Rating for a specified load profile

Given all parameters of your power application, find the required battery rating.

Load scenario

Total duration in s 1...120 s Avg. current in A 1...500 A Min. voltage in V 7.5...10.8 V Max. current in A 15...1000 A

Equivalent profile: I_max = 150 A for t_eff = 8.00 s U_min,5s = 9.00 V, U_min,8.00s = 9.06 V

Battery condition

Ageing condition BoL / EoL

Temperature in °C -40...40 °C State of Charge in %Cn 30...100 %Cn

Result

With the given parameters, your application would require an I_cc rating > 307 A (good accuracy).

Can you modify the minimum battery voltage?

Can you modify the peak load current?

Can you modify the minimum battery temperature?

Can you modify the minimum state of charge?

These diagrams show how the result changes with each parameter. Notice the strong impact of minimum allowed peak voltage – lowering it by 0.5 V can significantly reduce battery size requirements.

––––– Good accuracy ––––– Moderate accuracy – – – Invalid range

Select diagram type: