An aerosol apparatus comprising: - a nebulising means for nebulising a substance to be administered to a user; the nebulising means comprising a reservoir containing the substance to be nebulised and an actuator which brings about the nebulisation of the substance; - a first casing for housing at least said actuator; - an electrical energy storage means for powering said actuator of the nebulising means; - a second casing for housing the electrical energy storage means; the first and second casings (3, 5) being movable between: i) a first configuration wherein the first and second casings (3, 5) are solidly assembled to each other; and ii) a second configuration wherein the second casing is movable relative to the first casing; the electrical energy storage means being able to electrically power the nebulising means in both the first and second configurations; the aerosol apparatus further comprising: - a first electrical connector positioned along the first casing and connected to the storage means; - a second electrical connector positioned along the second casing and electrically connected to the nebulising means; in the first configuration, the first and second connectors (61, 62) being reciprocally connected to enable the electrical powering of the nebulising means; - an electrical cable, which in the second configuration connects the first and second casings (3, 5), enabling the electrical powering of the nebulising means by the electrical energy storage means; wherein said electrical cable, in the second configuration, connects the first and second connectors (61, 62); characterised in that said electrical cable is removably connectable to the first and second connectors (61, 62); said electrical cable, in the first configuration, being disconnected from the first and second connectors (61, 62). - a nebulising means for nebulising a substance to be administered to a user; the nebulising means comprising a reservoir containing the substance to be nebulised and an actuator which brings about the nebulisation of the substance; - a first casing for housing at least said actuator; - an electrical energy storage means for powering said actuator of the nebulising means; - a second casing for housing the electrical energy storage means; the first and second casings (3, 5) being movable between: i) a first configuration wherein the first and second casings (3, 5) are solidly assembled to each other; and ii) a second configuration wherein the second casing is movable relative to the first casing; the electrical energy storage means being able to electrically power the nebulising means in both the first and second configurations; the aerosol apparatus further comprising: - a first electrical connector positioned along the first casing and connected to the storage means; - a second electrical connector positioned along the second casing and electrically connected to the nebulising means; in the first configuration, the first and second connectors (61, 62) being reciprocally connected to enable the electrical powering of the nebulising means; - an electrical cable, which in the second configuration connects the first and second casings (3, 5), enabling the electrical powering of the nebulising means by the electrical energy storage means; - a first electrical connector positioned along the first casing and connected to the storage means; - a second electrical connector positioned along the second casing and electrically connected to the nebulising means; in the first configuration, the first and second connectors (61, 62) being reciprocally connected to enable the electrical powering of the nebulising means; - an electrical cable, which in the second configuration connects the first and second casings (3, 5), enabling the electrical powering of the nebulising means by the electrical energy storage means; wherein said electrical cable, in the second configuration, connects the first and second connectors (61, 62); characterised in that said electrical cable is removably connectable to the first and second connectors (61, 62); said electrical cable, in the first configuration, being disconnected from the first and second connectors (61, 62).