Capacity is missing.
Battery charging calculator
Energy needed ÷ charger power, with losses and the slow final stretch.
Battery charging — inputs
%
Assumption: From empty.%
Assumption: To full.%
Assumption: Assumed charging loss — varies by charger and battery.Links and cards contain only the calculator inputs and result — never the question you typed.
Example: How long to charge a 75 kWh car battery on a 7 kW charger?