This text is machine translated.Powerful 9-V block battery charger for 1 - 4 rechargeable batteries.After inserting the rechargeable batteries, the voltage is determined automatically and the charging process starts. You can choose between the 5 programs Charge, Discharge, test, quick test and refresh. If the test mode by charging and discharging the capacity is determined. When quick test mode if, on the other hand, via the battery internal resistance of the voltage drop is measured within 10 seconds.The refresh mode is the optimal care and refresher for your rechargeable batteries. Here, the battery is repeatedly charged and discharged in order to reach its optimum capacity again. The charge current and discharge current can be adjusted from 50 mA to 200 mA.In the case of NiMH and NICD rechargeable batteries, it is by means of Minus-Delat-U the charging current is switched off when the rechargeable battery is fully charged. After the charging process is automatically activated for Ni