ClueLuma

Average charging power calculator

Divide the required charging input by available time and check the charger power limit.

Pcharge=EDC×100ηcharge×tP_{\text{charge}} = \frac{E_{\text{DC}} \times 100}{\eta_{\text{charge}} \times t}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

kWh
%
h
kW

Worked example

Given

  • EDCE_{\text{DC}} = 480 kWh
  • ηcharge\eta_{\text{charge}} = 96 %
  • tt = 5 h
Pcharge=480×10096×5=100P_{\text{charge}} = \frac{480 \times 100}{96 \times 5} = 100

Symbols and units

SymbolMeaningUnit
PchargeP_{\text{charge}}average AC charging powerkW
EDCE_{\text{DC}}DC energy addedkWh
ηcharge\eta_{\text{charge}}AC-to-DC charge efficiency%
ttavailable charging windowh

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Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.