This guide will show you how to open and dismantle the Braun Oral-B Genius X, 10000, 9000, 8000, 7000, Smart 6000 and Smart 6 electric toothbrush models and repair them by fitting a replacement Li-ion battery. These are expensive, top-of-the-range toothbrushes so they are well worth repairing! This battery replacement guide is only for Genius … Continue reading Braun Oral-B Genius/Smart Type 3765 & 3771 Battery Replacement