--- product_id: 593216999 title: "Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit" brand: "swarking" price: "¥3576" currency: JPY in_stock: true reviews_count: 1 category: "Swar King" url: https://www.desertcart.jp/products/593216999-replacement-battery-compatible-with-bm3e-xiaomi-mi-8-m1803e1a-toolkit store_origin: JP region: Japan --- # Fast charging efficiency 551+ charge cycles Multi-layer safety protection Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit **Brand:** swarking **Price:** ¥3576 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your Xiaomi Mi 8 with confidence and speed! ## Quick Answers - **What is this?** Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit by swarking - **How much does it cost?** ¥3576 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/593216999-replacement-battery-compatible-with-bm3e-xiaomi-mi-8-m1803e1a-toolkit) ## Best For - swarking enthusiasts ## Why This Product - Trusted swarking brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **DIY Upgrade Kit:** Includes toolkit for a seamless battery swap—join the savvy tech crowd upgrading their phones. - • **Endless Power Play:** Up to 551+ recharge cycles keep your Xiaomi Mi 8 powered longer than ever. - • **Rapid Recharge Ready:** Experience fast charging that gets you back to 100% in no time. - • **Risk-Free Confidence:** 39-hour responsive customer support with replacement or refund guarantee. - • **Safety First, Always:** Advanced dual IC design with overcharge, overheat, and short circuit protection. ## Overview This BM3E replacement battery for Xiaomi Mi 8 features A+ grade polymer cells, delivering over 551 charge cycles with fast charging capabilities. Equipped with comprehensive safety protections including dual IC design, it ensures reliable and secure performance. The package includes a toolkit for easy installation, backed by responsive customer support and a satisfaction guarantee. ## Description Specification： Part number：BM3E Type：Polymer Capacity： Compatible models： Xiaomi Mi 8 M1803E1A Package includes： -1 x Grade A+ Battery +1 x Toolkit Product Description： ✔1.We don’t provide an instruction manual. You can find instructional videos on YouTube. We always recommend a trained technician replace it. ✔2.To have the best use effect, please use up all the battery power until the phone automatically shuts down, and then fully charge it. Repeat this action 3-5 times to make the battery achieve its best use effect. ✔3. Do not use low quality third-party adapter charger to charge your device, that will shorten the battery's life. Note： 1. Please double check the model number of your device before purchasing to determine if this battery is compatible with your device. 2. Due to lighting and screen differences, product colours may vary slightly from the images. 13.Please do not hesitate to contact us if you have any questions or queries about the products you have received. Review: not full capacity - This battery is made in apr 2021. In nearly 24 hours of screen-off standby, the battery drained almost 100%. According to the phone’s battery settings page, ‘Standby’ consumed 1267 mAh, accounting for 80% of the drain. This means the so-called ‘brand-new’ battery has less than1600 mAh capacity. ## Features - 【Compatible Model】 Please Make sure your phone is suitable for this replacement battery before ordering. Battery Model: BM3E Battery. - 【Durable】100% brand new, high quality, upgraded batteries with A+ grade cells, UL certified. Each battery is tested under strict quality control standards before shipment, fast charging and high efficiency, can provide you with up to 551+ cycles of charging. - 【Quality Assurance】All batteries have the highest level of safety protection. This includes overcharge protection, overheat protection, short circuit protection, efficient temperature control and more. Our dual IC design ensures that your battery will never fail under any circumstances. - 【Easy To Install】Instruction/Manual NOT included, but there are many installation tutorials videos on YouTube to reference. - 【Customer Guarantee】 We take care of all quality-related problems with a replacement or a complete refund. If you are not 100% satisfied with your battery change when using this battery during the period, we will reply to you within 39 hours. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B093V5Y9CJ | | Antenna Location | Indoor/Outdoor | | Battery Cell Composition | Polymer | | Battery Cell Type | Polymer | | Battery Weight | 0.1 g | | Best Sellers Rank | #97,194 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #912 in Cell Phone Replacement Batteries | | Brand | SwarKing | | Compatible Phone Models | Xiaomi Mi 8 | | Customer Reviews | 4.4 out of 5 stars 4 Reviews | | Item Weight | 0.1 kg | | Manufacturer | shenzhen baoran keji youxiangongsi | | Model Name | BM3E | | Number of Batteries | 1 Lithium Polymer batteries required. | | Recommended Uses For Product | Indoor/Outdoor | | Reusability | Rechargeable | | Unit Count | 73 Count | ## Product Details - **Battery Capacity:** 5000 Milliamp Hours - **Battery Cell Composition:** Polymer - **Brand:** SwarKing - **Number of Batteries:** 1 Lithium Polymer batteries required. (included) - **Recommended Uses For Product:** Indoor/Outdoor ## Images ![Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit - Image 1](https://m.media-amazon.com/images/I/614iwnY80CS.jpg) ![Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit - Image 2](https://m.media-amazon.com/images/I/61mWr1TIRjS.jpg) ![Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit - Image 3](https://m.media-amazon.com/images/I/513Yh2dgIhS.jpg) ![Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit - Image 4](https://m.media-amazon.com/images/I/61knuu2vU6S.jpg) ![Replacement Battery Compatible with BM3E Xiaomi Mi 8 M1803E1A with Toolkit - Image 5](https://m.media-amazon.com/images/I/71vLszy11WS.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐ not full capacity *by M***S on August 23, 2025* This battery is made in apr 2021. In nearly 24 hours of screen-off standby, the battery drained almost 100%. According to the phone’s battery settings page, ‘Standby’ consumed 1267 mAh, accounting for 80% of the drain. This means the so-called ‘brand-new’ battery has less than1600 mAh capacity. ## Frequently Bought Together - SwarKing Replacement Battery BN5D Compatible with Xiaomi Redmi Note 11/11S with Tools - for iPhone 11 LCD Screen Replacement,Wholesale Full HD COF Screen Digitizer Display Assembly,with Waterproof Adhesive,Compatible with iPhone 11 Screen Replacement 6.1 inch(A2111,A2223，A2221),No Tools - Yodoit for iPhone 11 Screen Replacement Kit Full HD COF LCD Display 3D Touch Digitizer Frame Full Assembly with Repair Tool for Model A2111, A2223, A2221 Black 6.1inch --- ## 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.jp/products/593216999-replacement-battery-compatible-with-bm3e-xiaomi-mi-8-m1803e1a-toolkit](https://www.desertcart.jp/products/593216999-replacement-battery-compatible-with-bm3e-xiaomi-mi-8-m1803e1a-toolkit) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-12*