Mr. Graham Brennan:

Battery management systems are very sophisticated now. They even have active cooling. They heat the battery to the right temperature before one starts charging it. There is a big difference between mobile phones and EVs. The battery in a phone is just big enough to get through the day, whereas the battery in an EV is big enough to get the car to Galway once a month. The battery in an EV is not cycled as much as a phone battery. Phone batteries work really hard, so they lose life faster. The irony is that the bigger the battery, the longer it lives. For the same mileage each year, a bigger battery is not being worked as hard, so it goes shallower. The bigger the battery, the longer it lasts.