Why is the charge level not displayed correctly when I insert full batteries into the Gigaset?

It is practically impossible to determine the battery capacity or state of charge of a NiCd or NiMH battery by fast measurement. For the charge management of the Gigasets, it is only possible to recognize completely empty or completely full (just charged) batteries by the voltage. In most cases, however, the display will show 1/3 or 2/3 because the flat discharge curve, the temperature dependence of the voltage and the different battery types do not allow the charge level to be clearly identified.