info8 years ago-101What is the diameter of the battery? Can I also use this instead of two CR123?Show in original language (German)heinrichb8 years ago000 Helpful answerDiameter is 18.5mm Length approx. 69mmShow in original language (German)CommentJimres758 years ago000I have already replaced CR123 batteries with an 18650, which should work in terms of mass.Show in original language (German)Comment2 comments