Scope

Simple energy-time estimate only. Real charging time depends on vehicle limits, charge taper, losses, temperature, and starting state of charge.

Lookup table

Estimate simple EV charging time from battery energy and charger power.

Scroll sideways to keep row labels aligned with hidden columns.

Formula basis: charging hours = battery kWh / charger kW before losses and charge taper.
Battery energy (kWh)3.8 kW7.7 kW9.6 kW11.5 kW
4010.55.24.23.5
6015.87.86.35.2
8021.110.48.37
10026.31310.48.7
Notes
  • Check table values for preliminary lookup and arithmetic checks only.
  • Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.