Really nice device, if it would work for. Unfortunately, it stops charging the remaining 3 batteries within 2-3 min after a battery is full. Therefore useless. This behavior has been observed even at other reviews of the charger under other Amazon product numbers. Therefore, I will return it.
After the products back I bought the modified Mr. Moessinger variant of this device (AV4ms, CPU upgrade and Kallibrierung) and am thrilled.