METHOD FOR CHARGING AN ENERGY SUPPLY DEVICE AT DIFFERENT TEMPERATURES INCLUDING LOW TEMPERATURES, ENERGY SUPPLY DEVICE, AND CHARGING DEVICE FOR AN ENERGY SUPPLY DEVICE

The invention relates to 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 a plurality of cell units (). The invention also relates to a charging device () for charging an energy supply device () for an electric tool () during a charging process, as well as an energy supply device () for an electric tool (), which comprises a plurality of cell units () and is configured for charging by means of a charging device () during a charging process.