Battery Replacement Guide for Braun Oral-B Type 3756 & 3754 Professional Care and TriZone Toothbrus

This guide will show you how to open the Braun Oral-B Type 3754 & 3756 electric toothbrushes and replace the rechargeable battery. Links for buying the batteries are below. Applicable to the Professional Care, Pro and TriZone 600, 1000, 2000, 3000 and 4000 models and similar, marked with Type 3754 or Type 3756 only. ... Direct link for buying the 42mm x 14mm battery: ... Direct link for buying the 49mm x 14mm battery: ... ... Skip to part 2a - Replacing with Original Size Battery: Skip to part 2b - Modifying and Replacing with Longer Battery: Skip to part 3 - Reassembly: ... #RightToRepair #RepairVsReplace