Compared to the original produkt these are slightly bigger in diameter and will not slide into the Oscilloscope that easily. The top end cover consists of soft foamy rubber material that makes interlocking of the battery compartment - cover, a true challenge. Reducing the foam absolutely reqired. Charging and end-of-charge indication with quick charger module (made for NiCd) works fine with the NiMh. True win is the higher capacity.