Duracell DL1/3N. Buy the 3 or 5 Pack and Save. These come in bulk from Cmore and are packed in plastic bags.
(3)
Average rating 10 out of 10
( based on 3
reviews )

C-More battery pack
Duraell Batteries
They work - not much more I can say about a battery.
Duracell C-More
Buy only Duracell they seem to stay brighter longer.