What if my battery dies during a session? Replace them immediately. You will need to start your toning session again. You can order replacement AAA batteries here. Related articles What toning programmes does the Abs5 feature? Where can I view my toning session progress? Slendertone Abs5 Unboxing & Set Up Video What do I need to work the Slendertone Abs5? How do I assemble the Abs3/Abs5 belt correctly? Comments 0 comments Please sign in to leave a comment.