As discussed, the zappi charger has different modes that can be adjusted depending on your need and preference. However, for general and routine usage, you must know first the kW size of your car’s battery and the rate of the charge in kWh. For instance, a 54kWh battery will take around 64 minutes using a 50kWh charger before reaching 100%. On the other hand, using a 7kWh charger will take around more than 7 hours.