EV Charging Time & Cost Calculator (kW, kWh, Wallbox & Supercharger)

Calculate electric vehicle (EV) charging time, energy cost and range added per hour based on battery kWh capacity and charger power (2.3 kW to 150 kW).

Capacidad Neta de la Batería (kWh)

Rango de Carga a Recuperar (%)

Potencia del Punto de Carga (Wallbox / DC)

Precio de la Electricidad (€/kWh)

Tiempo de Carga Real 5h 24m

Energía Facturada (+10% pérd.) 39.6 kWh

Coste Total de la Carga 5.54 €

Autonomía Ganada / Hora +44 km/h

EV Charging Time & Onboard Charger Efficiency Formula

EV Charging Standard (IEC 62196): Accounts for ~10% AC-to-DC onboard charger (OBC) conversion and thermal management overhead.

Tiempo (Horas) = (Capacidad Batería kWh × % Recarga × 1,10) / Potencia de Carga (kW)

Charging Speed Comparison by Connector Type (Schuko, Wallbox, CCS2)

Tipo de Cargador	Tensión e Intensidad	Potencia Nominal	Tiempo para 40 kWh	Km Recuperados / Hora
Schuko Modo 2	230V · 10A (1P)	2,3 kW	~19 horas	+13 km/h
Wallbox Doméstico	230V · 32A (1P)	7,4 kW	~6 horas	+44 km/h
Wallbox Trifásico	400V · 16A (3P)	11,0 kW	~4 horas	+65 km/h
Supercargador CCS2	400V-800V DC	150,0 kW	~18 minutos	+600 km/h

Frequently Asked Technical Questions (FAQ)

How do you calculate wire size for voltage drop?

For DC and single-phase AC circuits, cross-sectional area S (mm²) = (2 × Length × Current × ρ) / Voltage Drop (V). Always verify that conductor ampacity meets NFPA 70 (NEC Table 310.16) or IEC 60364.

What is the maximum allowable voltage drop?

Under NEC and IEC standards, the recommended maximum voltage drop is 3% for branch circuits and 5% total for combined feeder and branch circuits.