Estimate wall energy and charging cost from battery size, starting charge, ending charge, charging efficiency and electricity rate.
Use the connected calculators in this build for related estimates without starting over.
Enter the requested values above and select Calculate. Change any input to compare scenarios.
Adding 60% to a 75 kWh battery puts 45 kWh into the battery. At 90% efficiency, about 50 kWh comes from the wall.
Charging losses, utility rate structures, session fees and charger pricing can change the real cost.
Estimate wall energy and charging cost from battery size, starting charge, ending charge, charging efficiency and electricity rate.
Battery energy added = battery capacity × (end% − start%). Wall energy = battery energy added ÷ charging efficiency. Cost = wall energy × electricity rate.
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See how formulas, sources and limitations are handled across ERICH Calculators.