Battery coulombic efficiency test calculator

Calculate coulombic efficiency and net charge difference with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use coulombic efficiency and net charge difference to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Integrated charge input (Ah)
100
Integrated charge output (Ah)
98
Coulombic efficiency (%)
98
Net charge difference (Ah)
2

Try another scenario

Integrated charge input (Ah)
101
Integrated charge output (Ah)
98
Coulombic efficiency (%)
97.029703
Net charge difference (Ah)
3
Calculation method

Calculation method

Coulombic efficiency (%)

Coulombic efficiency=charge output/charge input; this differs from energy efficiency.

Net charge difference (Ah)

Coulombic efficiency=charge output/charge input; this differs from energy efficiency.

Symbols and units
a
Integrated charge input (Ah)
b
Integrated charge output (Ah)

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

  • User-supplied measurements and assumptions; Coulombic efficiency=charge output/charge input; this differs from energy efficiency. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
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