Great Maglite, bad batteries

With the idea to grant me a Maglite (I already know from an early age, and am of Maglite very confident) I rummaged on Amazon and found this set of Maglite Mag Tac including batteries, holster and charger, for 50 I slammed, now what should I say?

I operated the lamp only with batteries and was long also really satisfied. After that time, I also tested the batteries are fully charged, result: cruel!
About 20-30 minutes longer hold not the supplied batteries! After only a very weak light is (as we read in other recessions on Amazon, I'm not the only one with this problem) possible, absolutely useless ...

Ok I thought, then I'll get high-quality batteries, said, done, Nitcore RCR123A worried, but this radio animals not in this Maglite ...
I do not want to speak badly this flashlight, she is top handles, fits comfortably in your hand, and is extremely bright, but why should not I use a battery with such a power hungry device? Batteries are to me as far too expensive and if this light takes other battery I do not know, despite long search, I even let the Maglite here a battery lock installed !? Funnily enough, the work supplied ...

I have after all the back and forth the set can again go back, and I opted for the True Night N12 which takes RCR123A and 18650 batteries, and on top of that offers several Modie (1050 lumens).

Conclusion: great light, but which does not accept any other rechargeable batteries, and therefore in the long run is expensive ..
4 stars for the quality of the Maglite, and 1 for the bad batteries, gesammtwertung ie 2.5 rounded 3 stars