Flexvolt batteries cells Liz July 27, 2023 01:01 Updated Follow The models DCB606 and DCB615 have 18650 cells. The models DCB609 and DCB612 have 21700 cells Related articles Flexvolt batteries and compatible chargers What are the specifications for the FLEXVOLT batteries? What is the warranty on my battery? Are DEWALT batteries interchangeable? Are all the DEWALT 20v chargers compatible with the 20v POWERSTACK series? Comments 1 comment Sort by Date Votes Faith Friedhofer April 10, 2023 15:15 Edited I received an email from someone requesting additional info and I can’t find it. I purchased a Dewalt in July It was used for a few months and stored in the garage during winter. When we tried to use it the battery is not charging. We charged the battery and worked less than a minute and was dead again. Tried charging again with the same result. 0 Comment actions Permalink Please sign in to leave a comment.