Battery and energy system including such a battery

A battery and a battery system including such a battery. The battery includes: a first and a second battery cell arrangement, each including at least one battery cell, a first switch, and a second switch, and an evaluation unit. In each battery cell arrangement, the first switch is connected in series to the battery cell of the battery cell arrangement and the second switch is connected in parallel to the series connection made up of the battery cell and its associated first switch. The battery cell arrangements are connected in series. The evaluation unit is configured to activate the switches of a particular battery cell arrangement independently of the switches of particular other battery cell arrangements.