It’s bad faith, as not everybody has a charger.
They should charge a reasonable fee for charging the car and consider it as the cost of doing business.
Why are people prone to offering their opinions without knowing the facts?
Not everyone has a gas station either. You get dinged pretty HARD if you don;t return a car without a full tank of fuel (baring the agreement up front). Why should battery powered vehicles be treated differently than internal combustion? What about the person renting the electric car next? Should they be forced to wait for it to recharge 100% before they leave?