Is it dangerous if a flat battery means you can't get in or out of the car?

My Hyundai Kona Electric 12v battery failed after 18 months, leaving the car inaccessible, as all the doors were locked and the "smart key" would not work. The AA fitted a new battery, but isn't this dangerous,...

Will driving a self charging hybrid on EV power alone cause damage?

If a self charging hybrid only does a low mileage mostly on electric power, does this have a bad effect on the mechanicals?

Do mild hybrids suffer from the same battery issues as full hybrids?

Do mild hybrids suffer the same problems as all other hybrids, not suitable for regular short journeys. Because manufactures are fitting low capacity 12 volt battery and inadequate charging systems, compared...

How does an EV's 12V battery get charged?

When charging an electric car does any charging of the car 's 12v battery take place this seems to me a good feature to have as when the car has not been driven for sometime the car battery was flat, the...