21700 flat top batteries are lithium-ion rechargeable cells designed with a flat positive terminal. These batteries are commonly used in battery packs, high-performance devices, and applications requiring direct contact and consistent fitment.
The 21700 format offers increased capacity and performance compared to smaller cell sizes, making flat top designs a preferred choice for modern battery pack assembly and high-drain applications.
Key Features
✔ Flat Top Design – Flush positive terminal for direct contact applications
✔ Lithium-Ion Chemistry – Rechargeable cells with consistent voltage output
✔ Increased Capacity – Larger format for extended runtime and performance
✔ Standard 21700 Size – Compatible with devices designed for flat top cells
Common Applications
✔ Battery Packs – Used in custom lithium-ion pack assembly
✔ High-Performance Devices – Suitable for applications requiring higher capacity and output
✔ Portable Equipment – Used in devices designed for 21700 batteries
✔ DIY & Custom Builds – Preferred for controlled battery configurations
Flat Top vs Button Top
Flat top batteries have a flush positive terminal, while button top batteries include a raised contact point. Flat top cells are typically used in battery packs and devices designed for direct contact.
Compatibility
Flat top 21700 batteries should only be used in devices designed for flat top cells. Always verify compatibility with your device or battery holder before use.
Important Note
Use only with compatible devices and chargers designed for lithium-ion batteries. Proper handling and usage are important for safe operation.
Browse our selection of 21700 flat top batteries to find lithium-ion cells suited for your application.
