The Aw 16340 are 3,7v, while the tenergy CR123 (Lifepo4 or Li-ion) and the AW Lifepo4 are 3-3,3v.
.... better to use the 16340, because starting from the nominal 7.4 V (8 to 8.4 V at full charge) and vaping at lower voltages (3,7-4-5 ecc...so downvolting), allows more constant performance and...