I had standardized on CR123A because of their advantages. The main reason that push me towards CR123A is the leakage of normal batteries in devices.

Once there was a power failure and I was left in the dark. I had various sizes Mag lite (about 6) and none of them works. It was not due to flat battery but leakages and I had to dispose of all Mag. I also had other devices that were ruined by battery leakages.

With an inventory of 200~300 pieces of CR123A at home. I could easily carry several dozens of CR123A on my trips. So shops not selling CR123A is not an issue for me.

I am always on the lookout for CR123A devices, do let me know if you are aware of any GPS, walkie talkie that use CR123A. Thanks.