Charger

A charger has a plurality of electrical interfaces, wherein a respective electrical interface is able to be coupled to an electrical energy store to be charged, in order to charge the electrical energy store to be charged. A common charge line of the charger carries a charging potential, in particular a positive charging potential, during the charging operation of the charger. A respective electrical interface includes: a first connection terminal which, when used as intended, is to be electrically connected to a corresponding connection terminal of an electrical energy store to be charged; two field-effect transistors which are looped-in in anti-serial fashion between the first connection terminal and the common charge line; and at least one control unit which is designed to drive the two field-effect transistors of a respective electrical interface such that, at any one time, the first connection terminal of only a single electrical interface is electrically connected to the common charge line via its two field-effect transistors.