The maxE of Ansmann can fully convince. I use C and D cells of this type and they keep for months in the flashlight that you rarely need, but also in the CD player. The capacities are lower than other batteries, but I'd still rather not in doubt at some capacity, as use of highly bred batteries that are often fast at the end. In AA cells me the Eneloop batteries convinced.
Hold even after 3 years of operation in children CD player still ...