21V 18650 Li-ion Battery Case Pack Kit – 5/10 Cell Shell
21V 18650 Li-ion Battery Case Pack Kit – 5/10 Cell Shell
21V 18650 Lithium Battery Case Pack Kit – 5/10 Cell Shell for DIY Assembly
Build or repair your own Li-ion battery pack with this sturdy 21V 18650 Battery Case Pack Kit. Designed for electronics enthusiasts and experienced hobbyists, this shell kit provides a reliable plastic and metal housing for assembling 5-cell or 10-cell 18650 lithium battery configurations. Whether you're refurbishing an existing power pack or building a custom one from scratch, this kit gives you the framework you need.
⚠ Important Notice: This product is a battery case/shell component only — batteries (18650 cells) are NOT included. This kit is intended strictly for individuals who are familiar with battery performance and have hands-on experience in battery assembly. Improper assembly of lithium battery packs can be hazardous. Please ensure you follow all relevant safety guidelines.
Key Features
- Voltage: 21V nominal (9V base configuration)
- Battery Type Supported: 18650 Li-ion cells
- Cell Configuration: 5-cell or 10-cell layout
- Material: Durable Plastic + Metal construction
- Color: Black
- Batteries NOT included — shell/housing kit only
- Ideal for DIY battery pack building, repair, and assembly projects
Dimensions
- Size A1: 4.33 × 2.83 × 1.65 in / 11 × 7.2 × 4.2 cm
- Size A2: 4.53 × 2.95 × 2.44 in / 11.5 × 7.5 × 6.2 cm
Package Contents
- 1 × Battery Shell/Case Kit Set (no cells included)
Important Notes
- Photos may not reflect actual size — please refer to the dimensions listed above.
- Minor measurement differences may occur due to manual measuring.
- Actual color may vary slightly from images due to monitor display differences.
Made in Mainland China.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Does this 18650 battery case kit come with batteries included?
A: No, this is a battery shell/housing kit only. The 18650 lithium battery cells are NOT included. You will need to source compatible 18650 Li-ion cells separately and have experience in battery assembly before using this kit.
Q: What cell configurations does this battery case support?
A: This kit supports both 5-cell and 10-cell 18650 lithium battery configurations, with two available size options (A1 and A2) to suit different build requirements.
Q: Is this kit suitable for beginners?
A: This product is designed for experienced hobbyists and technicians who are already familiar with lithium battery performance and safe assembly practices. It is not recommended for those without prior hands-on battery assembly experience.
Q: What materials is the battery case shell made from?
A: The battery case shell is constructed from a combination of durable plastic and metal, offering a sturdy and reliable housing for your DIY 18650 Li-ion battery pack.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.