--- product_id: 561780284 title: "Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included)" brand: "janllenton" price: "44484CFA" currency: XOF in_stock: true reviews_count: 9 category: "Janllenton" url: https://www.desertcart.sn/products/561780284-replacement-battery-case-housing-for-milwaukee-m18-48-11-1865 store_origin: SN region: Senegal --- # durable premium plastic case 10-cell 21700 battery config DIY repair & custom assembly Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included) **Brand:** janllenton **Price:** 44484CFA **Availability:** βœ… In Stock ## Summary > πŸ”§ Power up your Milwaukee M18 with DIY precision and durability! ## Quick Answers - **What is this?** Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included) by janllenton - **How much does it cost?** 44484CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/561780284-replacement-battery-case-housing-for-milwaukee-m18-48-11-1865) ## Best For - janllenton enthusiasts ## Why This Product - Trusted janllenton brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Empower Your DIY Skills:** Designed for pros and enthusiasts ready to take control of battery performance and longevity. - β€’ **Eco-Friendly & Cost-Savvy:** Repair instead of replaceβ€”save money and reduce electronic waste with this smart solution. - β€’ **Robust & Reliable Housing:** Premium-grade plastic ensures your battery cells stay protected and durable under pressure. - β€’ **Custom Battery Assembly Ready:** Build or rebuild your battery pack tailored to your power needs with this versatile case. - β€’ **Precision Fit for Milwaukee M18:** Seamlessly compatible with 48-11-1865 6.0Ah & 8.0Ah batteries for a perfect upgrade or repair. ## Overview This 18V 10-cell 21700 battery replacement case is a durable, premium plastic housing designed specifically for Milwaukee M18 48-11-1865 batteries (6.0Ah and 8.0Ah). Ideal for experienced users, it enables cost-effective DIY repair or custom battery assembly, extending battery life and reducing waste. Battery cells are not included. ## Description Plastic case and charging protection circuit board for broken Milwaukee M18 Li-ion batteries replacement. (Battery not included) The package includes the following items; Plastic battery replacement case housing PCB Circuit Board 9 Screws 6 Nickel Plates Stickers Compatible with most Milwaukee 18V Batteries and Milwaukee M18 Chargers. Please check your model number and the following compatible models; Compatible Battery Pack Models; 48-11-1865 48-11-1880 Compatible Battery Charger Models; 48-59-1802 48-59-1806 48-59-1807 48-59-1808 48-59-1810 48-59-1811 48-11-1882 Review: Good product - Fits perfect, functional as original. No problems. Review: Worked reasonably well. Metal was thick to spot weld - We used this and some 21700 cells to craft a fully operational Milwaukee Tools 18V M8 battery. We tested it and it worked well and charged fine for routine work with a pole chainsaw and a leaf blower. The instructions were minimal, but if you are willing to do your own spot welds, the wiring diagram is probably enough for you. Some soldering is needed to attach the battery contacts to the BMS. The only challenge we had is that the terminal metal contacts were too thick to weld to one another with the small handheld portable spot welder we bought for purpose. The metal is pretty thick and Im not sure it is even nickel. We had to buy a more powerful spot welder to get that to work. At highest power, fully charged, it did the job. Spotwelding the batteries to the contacts was easier. We were new to this task. My son picked up the unit assembled with batteries but without the welds in place. One of the battery contacts shifted over and developed a short with the one next to it, quickly burning my son's hand. After a week he had recovered so we decided to spot weld the thing once piece at a time more methodically with some tape to hold lose bits in place and things went well. This was a fun and painful learning experience for my son. I'm sure he'd do it again. T'was but a flesh wound. ## Features - Compatible Replacement for Milwaukee M18 Batteries: Specifically designed for 10-cell 21700 battery configurations, this plastic housing kit fits Milwaukee M18 models, including 48-11-1865 18V 6.0Ah and 8.0Ah batteries. (Battery cells not included.) - DIY Battery Repair and Assembly: Ideal for repairing damaged battery cases or assembling custom battery packs tailored to your specific needs. Perfect for professionals and DIY enthusiasts. - For Experienced Users: Recommended for individuals with knowledge of battery performance and practical experience in battery assembly to ensure safe and efficient use. (A welder is required.) - Durable Plastic Construction: Crafted from premium-grade plastic for enhanced durability, providing reliable protection and a robust housing for battery cells. - Cost-Effective Solution: Save money and reduce waste by repairing or upgrading your existing Milwaukee M18 battery instead of purchasing a new one. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CGN7DFFL | | Antenna Location | Power Tool | | Battery Capacity | 6000 Milliamp Hours | | Battery Cell Composition | Lithium | | Battery Cell Type | Lithium | | Battery Weight | 0.46 Pounds | | Best Sellers Rank | #85,504 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #247 in Power Tool Replacement Parts #1,002 in Cordless Tool Battery Packs | | Brand | Janllenton | | Compatible Phone Models | Milwaukee 18 | | Customer Reviews | 4.2 out of 5 stars 66 Reviews | | Item Dimensions | 5 x 3 x 3 inches | | Item Weight | 0.46 Pounds | | Manufacturer | Janllenton, Inc | | Model Name | For Milwaukee M18 | | Model Number | JYX-M18 | | Number of Batteries | 1 Lithium Ion batteries required. | | Recommended Uses For Product | Power Tool | | Reusability | Rechargeable | | Unit Count | 1.0 Count | | Voltage | 18 Volts | | Warranty Description | 2 Years Free Warranty | ## Product Details - **Number of Batteries:** 1 Lithium Ion batteries required. - **Brand:** Janllenton - **Battery Cell Composition:** Lithium - **Battery Capacity:** 6000 Milliamp Hours - **Recommended Uses For Product:** Power Tool ## Images ![Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included) - Image 1](https://m.media-amazon.com/images/I/61Vk-IYfLxL.jpg) ![Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included) - Image 2](https://m.media-amazon.com/images/I/51QDzQz03ML.jpg) ![Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included) - Image 3](https://m.media-amazon.com/images/I/51KI5WCqxgL.jpg) ![Replacement Battery Case Housing for Milwaukee M18 48-11-1865 18V – 10-Cell 21700 DIY Repair Shell Kit (Battery Not Included) - Image 4](https://m.media-amazon.com/images/I/51g45diDpQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by M***M on September 25, 2025* Fits perfect, functional as original. No problems. ### ⭐⭐⭐⭐ Worked reasonably well. Metal was thick to spot weld *by I***N on April 11, 2024* We used this and some 21700 cells to craft a fully operational Milwaukee Tools 18V M8 battery. We tested it and it worked well and charged fine for routine work with a pole chainsaw and a leaf blower. The instructions were minimal, but if you are willing to do your own spot welds, the wiring diagram is probably enough for you. Some soldering is needed to attach the battery contacts to the BMS. The only challenge we had is that the terminal metal contacts were too thick to weld to one another with the small handheld portable spot welder we bought for purpose. The metal is pretty thick and Im not sure it is even nickel. We had to buy a more powerful spot welder to get that to work. At highest power, fully charged, it did the job. Spotwelding the batteries to the contacts was easier. We were new to this task. My son picked up the unit assembled with batteries but without the welds in place. One of the battery contacts shifted over and developed a short with the one next to it, quickly burning my son's hand. After a week he had recovered so we decided to spot weld the thing once piece at a time more methodically with some tape to hold lose bits in place and things went well. This was a fun and painful learning experience for my son. I'm sure he'd do it again. T'was but a flesh wound. ### ⭐⭐⭐⭐⭐ 8ah battery case replacement *by A***R on November 20, 2025* Was a perfect replacement for the 8ah battery. If there are no issues with the battery pack case itself, you can grind out the ribs in the bottom of the case and it will work perfectly. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/561780284-replacement-battery-case-housing-for-milwaukee-m18-48-11-1865](https://www.desertcart.sn/products/561780284-replacement-battery-case-housing-for-milwaukee-m18-48-11-1865) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-05-18*