Which 3V R 123 from lighthound for my P2D CE?

[Kanai]

I'm ordering some stuff from Lighthound today and want to get add a 3 volt charger and some 123 batteries for my P2D CE. I have some 3.7 batteries already but I want to be able to use all the modes on my light. I understand that the capacity will be less than primary cells, is there anything else that I need to be aware of when using 3 Volt batteries in my P2D CE? Thanks in advance.

 

[kzad]

I'm curious too. I'm using AW lifpo, work great but no low, very little difference between med and high, then turbo. Not bad, but it'd be nice to have low mode.