The Best Fitbit Charge Replacement Battery of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Fitbit Charge Replacement Battery of 2025. Check our ranking below.
2,922 Reviews Scanned
![Senpinkboo for Fitbit Charge 5 LSS271617 Battery for Fitness Smartwatch FB421 Replacement Battery Upgraded [120mAh] with Repair Tool Kit](https://m.media-amazon.com/images/I/51Ky-aCJeRL._SL160_.jpg)
- Compatible Model:This Replacement Battery model is FB421, FB421BKBK, FB421SRBU, FB421GLWT. please carefully examine your device model and old battery if it fits before purchasing.
- HIGH QUALITY GRADE A PREMIUM BATTERY:Each battery is tested to strict quality control standards and includes a built-in IC chip to prevent overcharging, overheating, and other defects.You can choose it with confidence.
- Easy To Install:The installation process is not complicated,most people can replace it by themselves. And YouTube also has many installation tutorials videos to reference.
- Quality Assurance:Before shipment, every item was thoroughly tested and packaged. Brand new and high quality. Perfect for FB421, FB421BKBK, FB421SRBU, FB421GLWT battery.
- Good After-sales Service:We are very focused on the customer experience.Please contact us if you have any questions, whether pre-sales or after-sales. We will try our best to solve it for you.
- Replacement for the Following Battery Model/Part Numbers: LSS271617.
- 100% Compatible with original battery.
- Battery Voltage:3.87V Battery Capacity:65mAh，
- Compatible for Fitbit Charge 5 Fitness Smartwatch FB421 FB421BKBK, FB421SRBU, FB421GLWT
- Warranty :Rest assured with 60 days Refund and 12 months Warranty;24 x 7 email support.
- 【Compatible Model】Only Compatible with Fitbit Charge 5 Smartwatch FB421 battery, battery model number is LSS271617 battery, please double check your cell phone model match before purchasing the battery.
- 【Durable and long-lasting】New 0-cycle battery cells with upgraded capacity, batteries are tested under strict quality control standards before leaving the factory, storing more power, bringing more standby time, prolonging battery life and reducing the number of recharges.
- 【Easy Installation】Complete repair kit is provided. Instruction/manual is not included, before removing, please read the battery replacement guide video on YouTube carefully. Please remember that the battery will only reach its best use after 3 to 5 full charge/discharge cycles.
- 【Multi-protection】Built-in upgraded smart IC chip technology prevents overcharging, overheating, short-circuiting, etc. to ensure safety.
- 【Friendly Customer Service】If you encounter any problems after installing the battery, please contact us at the first time. We will contact you within 24 hours. We will be happy to serve you. Thanks.
- 【Wide Compatibility】High-quality replacement batteries for Charge 5 (use "Ctrl+F" to search for compatible models) or more compatible models found in the product description.
- 【Battery parameters】Voltage:3.87V, Capacity:65 mAh/0.25 Wh, Size:18.30 x 15.20 x 2.60mm, Weight: 26.5g.
- 【Perfect replacement】 Large-capacity cycle function, the new complete decoding chip works the same as the original chip, and is a perfect replacement for genuine batteries.
- 【Excellent Quality】High quality, no memory effect, replacement batteries have been tested by professional testers under strict quality control standards, overheating protection, overcharge protection, overload protection, short circuit protection, safety protection. You can use the replacement battery with confidence.
- 【Note on battery】 After receiving the battery, let the battery charge for 2-17 hours first, so that the battery life will be longer.
- Replacement for the Following Battery Model/Part Numbers: LSS271617.
- Intended for/Compatible with the Following Smartwatch Models: Fitbit Charge 5, FB421, FB421BKBK, FB421SRBU, FB421GLWT.
- 3.87V(3.7V) 65mAh 0.25Wh Lithium-Polymer Rechargeable Battery Pack.
- Includes Free Installation Tools.
- 1 Year Replacement Warranty. MPF Products is a Registered Trademark.
- This battery is Compatible with Fitbit Charge 5 Smartwatch FB421, please carefully check your phone model before purchase.
- When you replace your old battery, please carefully and gently disconnect your old battery's cable then connect your new battery to the mainboard. If you phone cannot be powered on with the new battery, you may need to install it again and be sure to check if the cable has been properly connected.
- If you have any questions or got any issues with our product, please feel free to contact us, we will reply to you within 24 hrs. We highly appreciate your kind patience.
- All the batteries have been tested before shipping out, No installation instruction.
- Need professional installation technology,We won't responsible for any damage due to improper operation.
- Replacement for the Following Battery Model/Part Numbers: LSSP411415, 411415.
- Compatible with the Following Fitbit Wristband Watch Models: Fitbit Charge 2, FB407, FB407SBKS, FB407SBKL, FB407SBUS, FB407SBUL, FB407SPMS, FB407SPML, FB407GMBKS, FB407GMBKL, FB407RGLVS, FB407RGLVL, FB407STES, FB407STEL (PLEASE NOTE: THIS REPLACEMENT BATTERY IS ONLY COMPATIBLE WITH THE FITBIT CHARGE 2 FB407. IT IS NOT COMPATIBLE WITH ANY OTHER FITBIT MODELS INCLUDING THE FITBIT CHARGE HR).
- 3.7V 60mAh 0.22Wh Lithium-Polymer Rechargeable Battery Pack.
- Includes Free Installation Tools (Soldering Iron Not Included).
- 1 Year Replacement Warranty. MPF Products is a Registered Trademark.
- 💐Please ensure both model and battery part number are matched with your device before purchasing( you can find related information in product description). If you are still not sure whether the model matches, please contact customer service.
- 🔋Product Type:Li-Polymer Volts:3.87 Capacity:65mAh / 0.25WhDimension:18.30 x 15.20 x 2.60mm Weight:1.5
- 🔋This product is a replacement battery. Fit for Brand: Fitbit. Fit Model: Charge 5Part No: LSS271617
- 💡Our company focuses on the research and development of various batteries. Committed to providing customers with high-quality batteries.Certificated with FCC, CE,CB,ISO9332,and RoHS.
- ☎If you have any questions during use, please contact us. This product is backed by a 14-day money-back guarantee and a 12-month warranty.
- 【Wide compatibility】The battery Compatible with Fitbit Charge HR,Part Number:LSSP031420AB.
- 【Product Specifications】Voltage:3.7V,Capacity:80mAh/0.29Wh.
- 【Superior quality】 No memory effect. Every battery are CE certified, tested by manufacturer to match OEM standard,built with multiple circuit protection.
- 【Perfect Replace】High capacity circulatory function, perfect replace your original batteries.
- 【After-sales Service】12-month Warranty and 14-day Money Back Guarantee.Your satisfaction is important to us, please feel free to contact us with any question, 24*7 Email support.
- Replacement for the Following Battery Model/Part Numbers: LSS271621.
- Intended for/Compatible with the Following Models: Fitbit Charge 3 FB409, FB410, FB409GMBK, FB410GMWT.
- 3.7V 71mAh 0.22Wh Lithium-Polymer Rechargeable Battery Pack.
- Includes Free Installation Tools.
- 1 Year Replacement Warranty. MPF Products is a Registered Trademark.
Last update on 2026-06-27 / Affiliate links / Images from Amazon Product Advertising API
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- Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Fitbit Charge Replacement Battery.
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