Replacement Battery for Oral-B Triumph 4000, Triumph 5000, Triumph 9000, Triumph 9400, Triumph 9500, Triumph 9900, and Others Part NO Oral-B 3731 3738

hey youtube today I'm going to be giving you a video tutorial on how to replace the internal battery of your Braun oral-b electric toothbrush this particular model in the video is actually the triumph professional care smart series 6000 model which I don't even believe you can purchase it in the store I bought it about three or four years ago from my dentist paid a real hefty premium for it and not too long into using it maybe a year or so the internal battery life started getting really short so I would have expected a little bit more from Braun oral-b especially when you buy their most expensive flagship toothbrush but anyhow let's get started so here are a couple tools that you're gonna need before we can even get started to taking this toothbrush apart first and foremost we need the actual charger unit that came with the toothbrush so that we actually have access to this little tria