Method for charging an energy supply device at different temperatures including low temperatures, energy supply device, and charging device for an energy supply device

A method for charging an energy supply device for an electric tool by means of a charging device during a charging process, wherein the energy supply device comprises at least one cell unit,

• with the following method steps:
• a) determining at least one temperature and at least one state of charge, wherein the at least one temperature and the at least one state of charge are each associated with the energy supply device;
• b) calculating at least one charging profile information as a function of the at least one temperature, the at least one state of charge and at least one target state-of-charge information using a charging profile model with at least one model information for setting a charging and/or a discharging of the energy supply device, wherein the at least one charging profile information comprises a charging process duration associated with the charging process, and wherein the at least one model information comprises a deposition information associated with a reaction material of the energy supply device;
• c) drawing a discharging current from the energy supply device during at least one discharging phase, and
• d) supplying a charging current to the energy supply device during at least one charging phase,
• in each case as a function of the calculated at least one charging profile information, in order to minimize the charging process duration or to avoid or at least limit, in a defined manner, a deposition of the reaction material in the energy supply device.