The choice of charging mode for EVs depends on the power level, speed, and location. Level 1 is the slowest and cheapest option, requiring a standard 120-volt outlet and taking up to 20 hours to fully charge an EV. Level 2 is more efficient, using a 240-volt outlet or a dedicated charging station, and it takes 4 to 8 hours to fully charge an EV. For emergency or occasional use, DC fast charging is the fastest and most expensive mode, taking 15 to 30 minutes to charge an EV up to 80%. When selecting a charging mode, consider your fleet's needs, budget, and availability. For instance, if your EVs have long routes and short breaks, DC fast charging may be necessary. On the other hand, if your EVs have short routes and long breaks, you may be able to save money by using level 2 charging.