Level 1:

Standardized connector.

At home using a normal wall outlet; cable included with car.

Slow charge rate; 3-5 miles per hour.

Useful for drivers traveling 40 miles or less daily; level 2 preferred if available.

Level 2:

Standardized connector.

At home using a dedicated charging station.

Medium charge rate; 15-30 miles per hour.

Useful for drivers traveling 100+ miles daily.

DC fast charging:

Three connector types; CCS, CHAdeMO, Tesla.

Just off the highway using dedicated high power stations.

Fast charge rate; 150-400 miles per hour.

Useful for long distance driving 300+ miles daily.