Need these batteries for the Citronella anti-bark collar for the "Barking Bichon". He's here permanently now, after his owner (a family member) had to move into full care. Very sweet little dog, and well behaved, except for being a barking idiot. The collar has solved the problem! Really appreciated the prompt shipping, and very happy that a 2-pack was available. Will re-order when I install the second battery; a battery lasts about 3 weeks with him. I've never had a barking idiot before, so this is a new experience for me. My other three little dogs only bark when someone knocks on the door. Many thanks!!!