A charging point is a specialist piece of electrical equipment which can be used to recharge your electric vehicle. EV Chargers can essentially be grouped into two types; those that supply alternating current (AC) to the vehicle, and those that ‘rectify’ AC to provide direct current (DC).
As batteries are DC devices, delivering DC and requiring DC to recharge, use of an AC charger means that an ‘on-board’ rectifier (or ‘charger’) is required to be built into the EV. DC chargers perform the rectification in the charging unit; one of the reasons why they are often larger and most costly to manufacture. The advantage, however, is that the vehicle no longer requires an ‘on board’ charger and can be charged more quickly. In practice, most vehicles have an on-board charger to be able to use an AC supply.