V2G
Vehicle to Grid. A cool way to make money from your car. This uses your electric car battery to release power back through the charger either for use in your home or you can sell it back into the grid at large during times of high demand. It’s currently offered in the UK by OVO Energy and the Nissan Leaf is one of the few cars currently clever enough to do this.
V2H
Vehicle to Home. As with Vehicle to Grid, but the car can only be used to power your home rather than feed power back into the wider grid. Useful in a power cut. As are candles.
Voltage
A measure of the power of electricity. The higher the voltage, the more powerful the car. Porsche’s Taycan uses an 800 volt system for example, allowing it to be fast and very quick to charge.
V2L
Vehicle to Load - this means you can use the car as a giant power bank to run electrical items. On some cars, such as the Honda e, it can only be low-power items. But others like the Kia EV6 and Hyundai IONIQ5 can run up to 3.6kW - that's enough for a kettle.