Rebuild or DIY Your 18V M18 Li-Ion Battery Pack with Ease

This M18 Compatible 18V Li-Ion Battery Case Kit is designed for hobbyists, makers, and DIY enthusiasts who want to rebuild or customize their 18V power tool battery packs. Engineered to fit 10 x 18650 lithium cells in a secure arrangement, the kit comes complete with nickel strips pre-cut for spot-welding connections — making your battery rebuild cleaner, faster, and more reliable.

Whether you're rebuilding a worn-out battery pack or constructing a new one from scratch, this case provides the structural support and electrical connectivity you need. Note: Batteries and charger are NOT included.

Key Features

Compatible With: M18 18V Li-Ion battery platform power tools
Cell Configuration: Accommodates 10 x 18650 lithium-ion cells (cells not included)
Includes Nickel Strips: Pre-cut nickel sheet strips for easy spot-weld assembly
Durable Construction: Sturdy plastic housing holds cells firmly in position
Multiple Pack Options: Available as 1-set, 2-set, or 5-set purchase for greater value
DIY-Friendly: Ideal for battery pack rebuilds, repairs, and custom builds

Package Contents

1 x M18 Li-Ion Battery Case (fits 10 x 18650 cells)
1 x Set of Pre-Cut Nickel Strips
Batteries and charger NOT included

Specifications

Accessory Type	Battery Case & Nickel Strips
Cell Capacity	10 x 18650
Compatible Voltage	18V
Battery Included	No
Charger Included	No
Material	Plastic Housing + Nickel Sheet Strips
Country of Origin	Made in China

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Safety & Standards Reference

For general guidance on safe handling and disposal of lithium-ion batteries and battery components, visit the U.S. Consumer Product Safety Commission – Lithium-Ion Battery Safety.

Learn more: EnerSys

Frequently Asked Questions

Q: Is this M18 battery case compatible with all M18 18V tool batteries?

A: This case is designed to be compatible with the M18 18V Li-Ion battery platform, fitting 10 x 18650 cells. It is intended for DIY rebuilds and repair use — always verify your specific battery dimensions before assembling.

Q: Do I need a spot welder to use these nickel strips?

A: Yes, a spot welder is recommended for attaching the included nickel strips to your 18650 cells for a secure and reliable electrical connection. Soldering directly to lithium cells is generally not advised due to heat sensitivity.

Q: Are 18650 batteries included with this kit?

A: No — the 18650 lithium-ion cells and charger are NOT included. This kit contains only the battery case housing and the pre-cut nickel strips needed for assembly.

Q: How many sets can I order at once?

A: This product is available in 1-set, 2-set, or 5-set quantities, making it easy to stock up for multiple rebuilds or projects.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.