A system constituted of at least a charging device and an accumulator, wherein: - the charging device includes a charging device housing with at least one accumulator interface, to which at least one accumulator can be mechanically coupled or is coupled, - the charging device includes at least one blower device arranged within the charging device housing, which is configured to generate an air volume flow, - the charging device and/or the accumulator include at least one sensor device, which is configured to measure and/or detect an actual accumulator surface temperature and/or actual accumulator cell temperature, - the charging device includes at least one tempering element for tempering the air volume flow generated by the blower device to a defined temperature, wherein the at least one tempering element is arranged downstream of the blower device in terms of flow, and wherein the tempered air volume flow is directed to the accumulator such that the outer surface thereof is flown around by the tempered air volume flow, - the charging device includes a control and/or regulation device being in communication or communicating with the at least one sensor device, which is configured to compare the actual accumulator surface temperature and/or actual accumulator cell temperature to a target accumulator surface temperature and/or target accumulator cell temperature, wherein the tempering element is controlled depending on the target-actual comparison of the accumulator surface temperature and/or the accumulator cell temperature such that the accumulator has or reaches a target accumulator surface temperature and/or target accumulator cell temperature by blowing by means of the tempered air volume flow, wherein - the charging device housing comprises at least one or more air entry openings, via which the blower device is, in particular fluidically, connected to the environment, and wherein - the charging device housing includes at least one or more air exit openings, via which the air volume flow generated by the blower device exits the charging device housing to blow on the accumulator with the tempered air volume flow. - the charging device includes a charging device housing with at least one accumulator interface, to which at least one accumulator can be mechanically coupled or is coupled, - the charging device includes at least one blower device arranged within the charging device housing, which is configured to generate an air volume flow, - the charging device and/or the accumulator include at least one sensor device, which is configured to measure and/or detect an actual accumulator surface temperature and/or actual accumulator cell temperature, - the charging device includes at least one tempering element for tempering the air volume flow generated by the blower device to a defined temperature, wherein the at least one tempering element is arranged downstream of the blower device in terms of flow, and wherein the tempered air volume flow is directed to the accumulator such that the outer surface thereof is flown around by the tempered air volume flow, - the charging device includes a control and/or regulation device being in communication or communicating with the at least one sensor device, which is configured to compare the actual accumulator surface temperature and/or actual accumulator cell temperature to a target accumulator surface temperature and/or target accumulator cell temperature, wherein the tempering element is controlled depending on the target-actual comparison of the accumulator surface temperature and/or the accumulator cell temperature such that the accumulator has or reaches a target accumulator surface temperature and/or target accumulator cell temperature by blowing by means of the tempered air volume flow, wherein - the charging device housing comprises at least one or more air entry openings, via which the blower device is, in particular fluidically, connected to the environment, and wherein - the charging device housing includes at least one or more air exit openings, via which the air volume flow generated by the blower device exits the charging device housing to blow on the accumulator with the tempered air volume flow.