What type of battery does Ellie use? Regina Vatterott June 10, 2021 22:20 Updated Ellie uses a lithium-ion polymer battery that lasts approximately one week with typical usage. Related articles Is this the only size available? How many pills can Ellie hold? How long is the battery life of the Ellie smart pill box? What material is Ellie made out of? I am having battery issues. What should I do? Comments 0 comments Please sign in to leave a comment.