Buy the MIKAFEN AA cree flashlight. They are better quality than the others of the same design.
These are superior over the other cree of the same or similar style. The machining is much better and the aluminum is much thicker.
MIKAFEN are the ones to get!! The other ones are sub-par to these.
In addition to using these myself, I give these out as gifts. I also purchase Tenergy AA NiMH 2600mAh Rechargeable Batteries to use in these. They do well for most circumstances.
Having given most away, I lost, or misplaced my last flashlight of this brand, so I purchased this 5 pack for personal distribution between home, person and vehicle.
THESE ONLY TAKE 1 x AA BATTERIES OR EQUIVALENT, WHICH would be THE 14500
These do NOT take 18650. Repeat, the 18650 are NOT compatible with this model.
There is however a similar flashlight in design that does take an 18650 battery. It is a bit larger.
Do your research.
Over-all, I am pleased with this flashlight.