Just a word of warning to test before you buy. I picked up 4 of these a couple years back so that I would have some on hand to replace the standard alkaline batteries currently in use. Now that I am replacing them, each of the 4 Ultralife batteries has been tested dead in the packaging. Stone cold, zero volts, needle does not even move, dead. They are all packaged in U9VL-X packaging with expiration dates of 2019 and 2020. The batteries are marked U9VL-J.