Even unpleasant is the fact that the typical Maglite design is not suitable for modern high-power LEDs, as these need a cooling surface. The Maglite has inside too much plastic, which does not conduct the heat away. Therefore Maglite installed only weak LEDs so that the lamps are only mediocre light compared to the competition.
Batteries you can not use in Maglite LED lamps generally the way. Their lower voltage coped not Maglite with their cheap driving technique.
What remains therefore is the beautiful aluminum case. But that's not 25-70 Euro (depending on size) worth it when the Maglite is photometrically hung loosely from the simplest China lamps.