My photon II has the same battery for the past 3 years and I use it a lot. I don't understand.

I caried maglight soliatre for a while but it kept unscrewing from the key chain so I picked up ARC AA. It's a great solid light, u can't go wrong with it. You know how sometimes it takes some time for equipment to grow on you? In this case it was instant. I grabed it and it was perfect for all around key chain carry.

Matt