EV charging is to be treated the same as gas expenses. Reimbursement will depend on whether it is a privately owned vehicle or a car rental:
Privately Owned Vehicle (Mileage): Not to be reimbursed as a separate expense; and will be included in Mileage reimbursement with wear and tear.
Car Rental: May be reimbursed as a separate expense or be included in the final car rental agreement.