Many electric-car and plug-in hybrid owners choose to have the tethered option on their wallbox, which has a built in charging cable that is permanently attached to the charger. This means they can leave their car’s charging cable in the boot and simply park up and plug in. It’s the convenient choice.
Tethered chargers come with some potential drawbacks:
Firstly, there’s the issue of potential obsolescence, since the plug on your charger needs to match the socket on your car. The potential for this to be an issue has reduced in recent times as the market is generally moving towards a standard of ‘Type 2’ connectors. There are, however, some EV’s and wallboxes with ‘Type 1’ connectors and so there is still the potential for incompatibility.
Secondly, unless the unit has a handy way of coiling the cable, you could end up with it trailing across the ground. And even if it does, you’ll still have to coil the cable up neatly each time. It’s also worth noting that tethered chargers have cables of a fixed length, meaning you can’t usually purchase a longer cable if you need one.
In contrast, socketed chargers require you to use your car’s charging cable and this means getting the cable out of your car each time you want to charge at home.
It’s personal choice whether you choose a tethered or socket wallbox based on your setup at home and what you will find most convenient.