Chargers are either Level 1, Level 2, or DC Fast Chargers (Level 3).
Level 1 chargers are the least expensive and connect your car charger port to a regular US 120V electricity socket. Level 1 chargers are the slowest category of chargers - to charge an EV using a level 1 charger from 0-100% may take up to 2-3 days.
A Level 1 charger is included with your Genesis EV or PHEV.Level 2 chargers use a higher voltage, typical 240V residential service requiring installation by a professional electrician qualified to install EV chargers. These charge much faster than Level 1 chargers - charging a car from 0-100% overnight. However, they cost more to purchase and install. Most EV owners with garages or private driveways install Level 2 chargers, but if you live or work near a fast charger (see below) you may be able to get by without a Level 2 charger.
DC Fast Chargers (Level 3) charge cars quickly, from 0-100% in an hour or sometimes as little as 30 minutes for a partial charge. They are costly (over $10,000) and require commercial electricity connections, so are rarely installed in homes. These are often provided at public charging locations for a per-charge cost exceeding what it would cost to charge at home.