Battery Replacement Guide for Braun Oral-B Type 4729 Toothbrush - Professional Care

This guide will show you how to dismantle the Braun Oral-B Type 4729 Professional Care electric toothbrush and repair it by replacing the internal Ni-MH rechargeable battery. Two different sizes of battery were fitted to this model so make sure you buy the matching replacement. Links for buying the batteries are below. This tutorial might also applicable to the similar Braun Oral-B Type 3746 toothbrush ... Direct link to the 42mm x 14mm battery: ... Direct link to the 42mm x 17mm battery: ... ...