Brand New NiMH Rechargeable Replacement Battery w/tabs for Braun Oral-B ProCare / Triumph Toothbrush 50mm What is this listing for? This listing is for the Brand New NiMH Rechargeable Replacement Battery w/tabs for Braun Oral-B ProCare / Triumph toothbrush. This is a high quality battery featuring tabs welded to battery terminals which allows to use it as a replacement of your old toothbrush battery. This battery fits: 3731, 3738, 3745, 3761, 3762. NOTE: This listing is NOT for the toothbrush or accessories; it is for a Replacement Battery (the picture of a toothbrush shown on the right is for illustration purpose only). If you need a toothbrush itself, accessories, or other spare parts please see our other items for available options. Who needs this battery? If you started to notice that your toothbrush does not hold charge anymore or looses power (discharges) too quickly, then chances are it needs a new battery. Give your toothbrush a second life and save money by installing a new battery rather then buying a new toothbrush. Below you will find step-by-step video tutorial explaining how to install the new battery. Who can do this repair? If you are generally comfortable with fixing things around the house then you have a good chance of successfully replacing the battery yourself. IMPORTANT: Please MAKE SURE to watch the video tutorial and read the F.A.Q. to understand repair process BEFORE buying the battery. Is this the right battery for your toothbrush make / model? Battery Dimensions (approx.): Length - 48mm, Diameter - 16mm. IMPORTANT: Your Toothbrush may come fitted with different types of batteries. It is a buyer's responsibility to make sure your battery dimensions match with the one you order. See our Repair guide on how to take apart your Toothbrush and to determine what battery it has. See our other items to find the correct size / type battery if needed. Your can find the model number on the bottom or (in some cases) on the side of your toothbrush. Additionally, you can identify your toothbrush model by searching via model number, toothbrush name or a picture HERE. Attention: depending on the manufacturer this toothbrush model may come with a longer (approx. 50 mm / 2 in) or a shorter (appox. 42mm / 1 5/8 in) battery. Please make sure you know what battery you need before purchasing it (open your toothbrush and measure the battery's length). See our other items to find the correct size battery if needed. How to replace the battery (video tutorial) To start tutorial double-click on the picture on the right (new window will open). This tutorial will take you through step by step battery replacement process. Make sure to apply extra caution when desoldering and soldering the battery to PCB (Printed Circuit Board). Should you have questions, please refer to our F.A.Q. to find more on how to best perform this repair and what to do if repair results are different from desired before sending us any questions. We are working hard to keep costs down and therefore will not be able to respond to questions which were already addressed in F.A.Q. Thank you for your understanding and support.   Why buy from us We are the most experienced team who pioneered in the field of electric toothbrush repairs and recycling We carry largest inventory of batteries and replacement parts for all rechargeable toothbrush makes & models available on market today We provide exceptional customer support through our extensive F.A.Q., instructional videos, timely updates, etc. We offer FREE toothbrush recycle service: just send your non-working toothbrush to us and we professionally disassemble and recycle it. RETURN POLICY: To ensure customer satisfaction we offer 14-day return/replacement policy. Please make sure to read our policy in full and agree to it before making your purchase.