21V 25V 42V Lithium Battery Case 30-Cell Large Capacity

Power your tools and projects without interruption with this 21V / 25V / 42V Lithium Battery Case. Designed to house 30 lithium cells, this large-capacity rechargeable battery enclosure delivers reliable, long-lasting energy for power tools, DIY builds, e-bikes, and more. Choose from three nominal voltage configurations to match your exact application — all in one sturdy, well-engineered housing.

Why You'll Love It

• Three Voltage Options: Select 21V, 25V, or 42V to suit your specific power tool or device requirements.
• 30-Cell Capacity: Accommodates 30 individual lithium cells for high-capacity, long-runtime performance.
• Durable Construction: Built from a robust plastic and metal combination that protects cells and withstands workshop conditions.
• Rechargeable Design: Recharge and reuse instead of constantly replacing disposable batteries — saving money and reducing waste over time.
• Versatile Use: Ideal for cordless power tools, custom battery packs, robotics, electric scooters, and DIY energy storage projects.
• Compact & Organized: Keeps all 30 cells neatly housed and secure, preventing shorts and making handling straightforward and safe.

Product Specifications

• Nominal Voltages: 21V / 25V / 42V (3 options)
• Cell Capacity: 30 cells
• Material: Plastic + Metal
• Type: Rechargeable lithium battery case / enclosure
• Suitable For: Power tools, DIY battery packs, e-bikes, and custom builds

For general guidance on lithium battery safety and best practices, refer to the U.S. Consumer Product Safety Commission (CPSC) – Lithium-Ion Battery Safety Information.

Frequently Asked Questions

Q: What voltages does this lithium battery case support?

A: This lithium battery case is available in three nominal voltage configurations — 21V, 25V, and 42V — allowing you to select the right option for your power tool or custom battery pack project.

Q: How many cells does this battery case hold?

A: The case is designed to house 30 individual lithium cells, providing a large capacity setup suitable for high-demand cordless tools and DIY energy storage applications.

Q: What is the battery case made of?

A: The enclosure is constructed from a combination of durable plastic and metal, ensuring structural integrity, protection for the cells, and resistance to the everyday demands of workshop or outdoor use.

Q: Is this battery case rechargeable?

A: Yes. This is a rechargeable lithium battery case, meaning you can recharge and reuse it repeatedly — reducing ongoing costs and making it a sustainable alternative to single-use battery solutions.