With the intelligent battery charger up to four NiMH batteries of the sizes Mignon and Micro, three baby batteries, two mono batteries or four Li-Ion batteries of the sizes 18650 can be charged simultaneously, also mixed - independant of number, size, capacity or charging status. Each of the 4 charging slots is individually monitored and individually charged/discharged.After inserting a battery, the charging mode starts and charges the battery completely. Each battery is charged separately. This means that rechargeable batteries of different types and with different capacity and charging status can be inserted and charged/discharged. After full charge, the charger automatically switches to pulse charging and keeps the battery charging at 100%. Thus, the batteries are always ready for use and can remain in the battery charging station for a longer period of time. After full charging, individual battery cells can be removed and new ones inserted without affecting the charging process in