UltraFire WF-1300L 7*SSC U2

Hey guys, I just got my first "real" flashlight from KD - UltraFire WF-1300L 7*SSC U2 - and it uses 3 18650 batteries. My batteries are ordered but not here yet. Can I use anything else until they arrive? AAs or I have some AA Eneloops. Since I don't want to blow up (1) myself (2) the flashlight or (3) the batteries, I'll wait until I hear back before I do anything.