Provided a battery and an electric apparatus. The battery includes a box, a battery unit, and a protective member. The box includes a first wall. The battery unit is accommodated within the box, where the battery unit is provided with a pressure relief mechanism, and the pressure relief mechanism is configured to form a pressure relief hole for releasing substances inside the battery unit. The protective member is accommodated within the box, where at least a portion of the protective member is located between the first wall and the pressure relief mechanism and configured to cover the pressure relief hole in an axial direction of the pressure relief hole. battery unitIn the embodiments of this application, redundancy designed for the dimension of the protective member can be reduced while thermal protection requirements are met, thereby reducing energy density loss of the battery and improving safety of the battery.