The batteries can charge from any 220 V outlet (we provide a 110 V converter when required) at home or the marina. We have regular chargers (1 kW / hour) or fast chargers (3 kW / hour). The charging time will then depend on the battery size. A 10-kWh battery will take 10 hours with a regular charger but will only take 3.3 hours with a fast charger. A 24-kWh battery will take approximately 8 hours with a fast charger.