How long will it take to charge my EV on 120V vs 240V? Charging rates vary dramatically based on the vehicle battery size, on-board charger, and the electrical source. Please refer to this chart with individual charging times for different EVs. Related articles What amperage rating should my electrical breaker be? JuiceBox Configuration How can I store my charge cable and J1772 plug when not in use? Are there any rebates available in my area? Where to enter the account information received from Heartland's welcome email?