What are the different levels of EV charging?

EV charging levels are: Level 1 (120V AC, 1.4-1.9 kW, adding 3-5 miles/hour - standard household outlet), Level 2 (240V AC, 7-19 kW, adding 25-30 miles/hour - home wallbox or public stations), and Level 3/DC Fast Charging (400-800V DC, 50-350 kW, adding 100-200 miles in 20-30 minutes - highway stations). Higher levels charge faster but require more infrastructure investment.