What do I need to work the Slendertone Abs7? You need the abs toning belt, handheld controller and charger, and one set of gel pads. Related articles How do I assemble the Abs7 belt correctly? What toning programs does the Abs7 feature? I’m ready to start toning. How do I control my Slendertone Abs7? Slendertone Abs7 Belt Size The performance of the battery has degraded significantly. Why? Comments 0 comments Please sign in to leave a comment.