The AA I sit amongst others often in flash units. Or in my wireless mouse and keyboard. This here in the format AAA are essentially for LED lamps (small spotlights with motion detectors, candles and Christmas tree lights).
Why no "normal" batteries? Because I think it's corrosive, firstly, that it is the variety that you need does not guarantee is there and secondly because my nerves collection and disposal. Is quite different with the Eneloop batteries: recharge, use, recharge, use. :-)
Conclusion: dignity and I will buy again and again, if I'm going to reach the specified 2000 charging cycles during his lifetime or after the batteries no longer really should work.
Therefore: full marks + buy recommendation!