M18 18V 12Ah Battery Kit/Housing/Casing with PCB, Nickel Strips & Components, Compatible with Milwaukee M18 Power Tools, 15×21700 Cell Assembly
Build your own 18V M18-style battery pack using 15 × 21700 lithium-ion cells. Kit includes the battery housing, PCB/BMS board, nickel strips and required assembly components. Designed for compatibility with Milwaukee M18 power tools.
Key Features
- DIY M18 Battery Kit – Assemble your own 18V battery pack.
- 15 × 21700 Cell Configuration – Designed for assembly using 15 compatible 21700 lithium-ion cells.
- Complete Kit Components – Includes housing, PCB/BMS board, strips and other assembly components.
- M18 Compatible – Designed to fit and work with Milwaukee M18-style power tools.
- Reusable Battery Housing – Suitable for custom battery-pack builds and replacements.
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For Experienced Builders – Requires proper cell selection, spot welding and battery-pack assembly knowledge.
Important Notice
- CELLS ARE NOT INCLUDED.
- This is a DIY battery assembly kit, not a complete ready-to-use battery.
- Requires 15 × 21700 lithium-ion cells
- Cells must be properly matched and suitable for the PCB/BMS
- Professional battery assembly is recommended
- Incorrect assembly can cause fire, injury or battery damage
- Do not solder directly to lithium-ion cells
Product Notice
- Housing/Component Only: Battery cells are NOT included.
- For DIY battery repair and assembly by experienced users only.
- Buyer is responsible for compatible cells, assembly, wiring, BMS, and testing.
- We do not guarantee successful assembly or performance of the completed battery pack.
- Please check all product details before ordering. Purchase only if you understand the product.
Terms and Conditions
7-day money-back guarantee
Shipping: 2-3 Business Days in normal conditions (See Shipping Policy)
7-day money-back guarantee
Shipping: 2-3 Business Days in normal conditions (See Shipping Policy)







