How long does the battery last? Dr. Boss 4 years ago A How long does the battery last? Posted on June 15, 2020 It supports more than 4-6 hours using time, amazing product Category: General Questions Permalink Related posts We are in the medical equipment exhibition, customer feedback is very good by Dr. Boss 4 years ago Reducing Muscle Hypertonicity With the Deep Muscle Stimulator by Dr. Boss 4 years ago Dr. Mark Hyman Rapaport Chair by Dr. Boss 4 years ago