Level 1 charging is to charge your EV from a regular wall outlet. It is typically 120 Volt charging and works very slowly. Just simply plug up to an outlet, and let your car charge up. Most outlets can be used; both residentially, and public places when Level two and DC charging isn't available. This type of charging can work in a pinch but you’re unlikely to get more than 5 miles of range per hour of charge.  Automakers almost always include with their plug-in vehicles, a small Level 1 charger (a small box or cylinder) with a short cord, and a grounded household plug one end, with a longer cord and the pistol-grip connector that plugs into the car on the other.

Level 2 charging is the most common type of charging used in homes. It requires special equipment, that will need a professional electrician to install it; operating at 208 or 240 Volts, just like your clothes dryer, electric oven or central air conditioner, and charges up to 10x faster than a Level 1. You can charge your car overnight, ready for the next day, or charge up from empty in four to ten hours. Public level 2 charging stations are common at locations where drivers tend to park, like workplaces or commercial parking lots, but most EV owners also get this version installed in their garage so they can charge overnight. 

Supercharging is the level you will want installed at your business. These operate at 400 Volts, which is a higher level of service than most homes have. As homes and other residential building operate on a grid, DC chargers are normally found in public places, like malls and regular gas stations, for use. These chargers provide a significant hit of energy quickly, helping you fill your battery in half an hour or less. Customers can park up, and charge their car whilst shopping in the mall, watching a movie, or going out for dinner. DC fast charging can be installed residentially, but specialist equipment and structural changes must be implemented.