Harness for a battery pack configured to be worn on the back and that supplies electrical energy to hand-guided electrical tools, preferably electrically powered gardening and/or forestry tools, wherein the harness comprises - a support base, - a support strap unit for the support base, and - a holding device for releasably holding the battery pack in a support position on the support base, - wherein the holding device comprises a docking mechanism on the support base for pivotably docking the battery pack in a docking position, and a securing mechanism on the support base for securing the battery pack in the support position pivoted in towards the support base with respect to the docking position, characterized in that - the docking mechanism is arranged on a lower region of the support base, and the securing mechanism comprises the following: - a securing slide which is arranged displaceably on the support base between a release position and a securing position and comprises a securing hook, which is designed to engage securely behind a corresponding mating securing element of the battery pack in the support position, wherein, when the battery pack is not docked, the securing slide is located in the securing position, and the securing slide has a run-on bevel which is designed, by interaction with the mating securing element, to displace the securing slide automatically in the direction of the release position when the docked battery pack is pivoted inwards in the direction of the support position, or - a securing lever which is arranged pivotably on the support base between a release position and a securing position and has a securing bow which is designed to engage securely behind a corresponding mating securing element of the battery pack in the support position. - a support base, - a support strap unit for the support base, and - a holding device for releasably holding the battery pack in a support position on the support base, - wherein the holding device comprises a docking mechanism on the support base for pivotably docking the battery pack in a docking position, and a securing mechanism on the support base for securing the battery pack in the support position pivoted in towards the support base with respect to the docking position, characterized in that - the docking mechanism is arranged on a lower region of the support base, and the securing mechanism comprises the following: - a securing slide which is arranged displaceably on the support base between a release position and a securing position and comprises a securing hook, which is designed to engage securely behind a corresponding mating securing element of the battery pack in the support position, wherein, when the battery pack is not docked, the securing slide is located in the securing position, and the securing slide has a run-on bevel which is designed, by interaction with the mating securing element, to displace the securing slide automatically in the direction of the release position when the docked battery pack is pivoted inwards in the direction of the support position, or - a securing lever which is arranged pivotably on the support base between a release position and a securing position and has a securing bow which is designed to engage securely behind a corresponding mating securing element of the battery pack in the support position.