--- product_id: 38270134 title: "FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh)" brand: "e toothbrush care" price: "4.91 DT" currency: TND in_stock: false reviews_count: 8 url: https://www.desertcart.tn/products/38270134-fdk-oem-nimh-replacement-battery-compatible-with-selected-oral-b store_origin: TN region: Tunisia --- # Narrow tabs for easy install 48L x 17D mm size 2700 mAh capacity FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) **Brand:** e toothbrush care **Price:** 4.91 DT **Availability:** ❌ Out of Stock ## Summary > 🔧 Revitalize Your Oral Care Routine! ## Quick Answers - **What is this?** FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) by e toothbrush care - **How much does it cost?** 4.91 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/38270134-fdk-oem-nimh-replacement-battery-compatible-with-selected-oral-b) ## Best For - e toothbrush care enthusiasts ## Why This Product - Trusted e toothbrush care brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Off-centered negative tab design ensures safe and trouble-free insertion. - • **DIY with Confidence:** Comprehensive instructions provided to guide you through the battery replacement process. - • **Power Up Your Smile:** 2700 mAh capacity ensures long-lasting performance for your Oral-B toothbrush. - • **Soldering Made Simple:** Narrow tabs (2mm) eliminate the need for trimming, making installation a breeze. - • **Perfect Fit, Every Time:** Precision-engineered dimensions (48L x 17D mm) guarantee compatibility with selected models. ## Overview The FDK OEM NiMH Replacement Battery is designed specifically for selected Oral-B toothbrush models 3731 and 3745. With a robust 2700 mAh capacity and precise dimensions of 48L x 17D mm, this battery ensures optimal performance. Its narrow tabs simplify installation, while the off-centered negative tab enhances safety. Ideal for DIY enthusiasts, this battery comes with detailed instructions for a seamless replacement experience. ## Description If your toothbrush loses power quickly or doesn't hold charge, most likely the rechargeable battery is dead. Don't waste money on a new toothbrush system, including handle, brush head, and charger! Bring your old toothbrush to life again by replacing the dead battery. Battery is fully tested before shipping. Due to the nature of battery product, No return is accepted after it has been installed. Review: and so far I am happy with the results - I bought two of these for our Braun electric toothbrushes, and so far I am happy with the results. It is no easy task to replace these, believe me, but there are some pretty good YouTube videos out there that got me through it. The batteries were the correct size, and the leads on the battery are the right width and in the correct spot for installation and attachment to the circuit board. This was also my first time soldering and de-soldering anything, but again, YouTube videos showed me the way. I recommend using a "solder sucker" rather than a de-soldering wick, as the former is much more effective when trying to remove the leads of the old battery. The batteries charged up and have been going strong and holding their charge for a good while now. The batteries are a good value for the money as they saved me from replacing 2 $150 toothbrushes that I like very much and have worked well. Review: Going Strong for My Braun 4736 - 8 month update: still going strong! Original Review: This battery is working perfectly for my Braun 4736, 2-speed toothbrush. After finding an online video of a guy showing how to remove the old and solder on a new battery, I was really pleased to find this available at desertcart. It turned out that the narrow tab on the negative side was skewed right of center and my model toothbrush needed it left of center. I simply put a z-fold into the tab, getting it to arrive skewed to the other side, also being careful not to break the spot welds. It's good that the supplier sends them with long tabs for trimming by the user. If one is able to make this repair (pretty delicate operation), then a small adjustment like this is not a big deal. The battery charged well and has been going strong for at least 6 weeks now. Ironically, my actual problem turned out to be my charger! So I ended up getting that too. Paying for something I didn't need was a little frustrating, but the repair was a good teaching moment for my son and me, and we felt some satisfaction when the toothbrush actually worked after the "operation". ## Features - FDK (Formerly SANYO) OEM rechargeable NiMH battery with narrow tabs. Select the size based on length and diameter of your existing battery. Caution: Check the size before purchase as multiple sizes of battery are in use for this model. Some models are known to have issue with the battery indicator not operating properly after installing a new battery, instruction on solving it is provided. - Narrow tabs (2mm wide) at both ends require NO tab trimming if soldering holes are clean. The negative tab is off-centered, matching the original for trouble-free and safe insertion. - Replacing battery in electric toothbrush requires soldering skill and the seller is not responsible for any damage or injuries that may incur in the process. Read battery replacement instruction to assess the difficulty involved and access the old battery before purchase. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MR5YANH | | Antenna Location | Toothbrush | | Battery Capacity | 2700 Milliamp Hours | | Battery Cell Composition | NiMH | | Battery Cell Type | NiMH | | Best Sellers Rank | #1,081,571 in Health & Household ( See Top 100 in Health & Household ) #614 in Powered Toothbrush Chargers | | Brand | E Toothbrush Care | | Customer Reviews | 4.2 out of 5 stars 53 Reviews | | Item Weight | 1.4 Ounces | | Manufacturer | E Toothbrush Care | | Model Name | Braun Oral b | | Recommended Uses For Product | Toothbrush | | Reusability | Rechargeable | | UPC | 620947506900 | | Unit Count | 1.0 Count | ## Product Details - **Battery Capacity:** 2700 Milliamp Hours - **Battery Cell Composition:** NiMH - **Brand:** E Toothbrush Care - **Recommended Uses For Product:** Toothbrush - **Unit Count:** 1.0 Count ## Images ![FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) - Image 1](https://m.media-amazon.com/images/I/51pjugePnDL.jpg) ![FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) - Image 2](https://m.media-amazon.com/images/I/61WSUx5lAnL.jpg) ![FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) - Image 3](https://m.media-amazon.com/images/I/61RUabyHKvL.jpg) ![FDK OEM NiMH Replacement Battery Compatible with Selected Oral-b Type 3731 or 3745 Toothbrush, with Narrow tabs (48L x 17D mm, 2700 mAh) - Image 4](https://m.media-amazon.com/images/I/51DRt5wgs0L.jpg) ## Questions & Answers **Q: does it fit to oral B type 3756** A: Yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ and so far I am happy with the results *by G***T on February 26, 2016* I bought two of these for our Braun electric toothbrushes, and so far I am happy with the results. It is no easy task to replace these, believe me, but there are some pretty good YouTube videos out there that got me through it. The batteries were the correct size, and the leads on the battery are the right width and in the correct spot for installation and attachment to the circuit board. This was also my first time soldering and de-soldering anything, but again, YouTube videos showed me the way. I recommend using a "solder sucker" rather than a de-soldering wick, as the former is much more effective when trying to remove the leads of the old battery. The batteries charged up and have been going strong and holding their charge for a good while now. The batteries are a good value for the money as they saved me from replacing 2 $150 toothbrushes that I like very much and have worked well. ### ⭐⭐⭐⭐⭐ Going Strong for My Braun 4736 *by V***O on February 21, 2016* 8 month update: still going strong! Original Review: This battery is working perfectly for my Braun 4736, 2-speed toothbrush. After finding an online video of a guy showing how to remove the old and solder on a new battery, I was really pleased to find this available at Amazon. It turned out that the narrow tab on the negative side was skewed right of center and my model toothbrush needed it left of center. I simply put a z-fold into the tab, getting it to arrive skewed to the other side, also being careful not to break the spot welds. It's good that the supplier sends them with long tabs for trimming by the user. If one is able to make this repair (pretty delicate operation), then a small adjustment like this is not a big deal. The battery charged well and has been going strong for at least 6 weeks now. Ironically, my actual problem turned out to be my charger! So I ended up getting that too. Paying for something I didn't need was a little frustrating, but the repair was a good teaching moment for my son and me, and we felt some satisfaction when the toothbrush actually worked after the "operation". ### ⭐⭐⭐⭐⭐ I installed spring backward *by J***Y on September 29, 2017* After installing this new battery and charging it I found the motor would barely work. I found I had installed the spring backward. The spring end should contact the battery. After correcting this, everything worked fine. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/38270134-fdk-oem-nimh-replacement-battery-compatible-with-selected-oral-b](https://www.desertcart.tn/products/38270134-fdk-oem-nimh-replacement-battery-compatible-with-selected-oral-b) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-03*