Flat top 21700 batteries are Unprotected lithium-ion cells with a Flat Positive Terminal, commonly used in High-Drain Devices like power tools, e-bikes, and industrial equipment. They lack in built safety circuit board and are required to be used with build-in Battery Management Systems BMS Devices. These batteries offers High Discharge rates, Long Cycle Life, and excellent Energy Density, making them ideal for Assembling Battery Packs in Professional and Industrial Settings.
Battery Characteristics
🔋Battery Type: Unprotected
🔋Built-In Protected Board: NO
🔋Nominal Voltage: 3.6V - 3.7V
At 2.5V =Â Â 0%Â (Fully Discharged)
At 3.6V =Â 50%
At 4.2V = 100% (Fully Charged)
🔋Diameter: ~21mm
🔋Length: ~70mmÂ
Key Features & Benefits
🔋 Unprotected Lithium-Ion Cells – Designed for applications that utilize external BMS.
🔋 High Continuous Discharge Rates – Ideal for power tools, flashlights, and performance-driven devices.
🔋 Flat Top Configuration for Battery Packs – Ensures seamless integration into multi-cell configurations.
🔋 Premium Cells from Industry-Leading Manufacturers – Molicel, Samsung SDI, Sony, LG Chem, and more.
🔋 Reliable & Consistent Power Output – Stable voltage and excellent efficiency.
Why Choose Flat Top 21700 Batteries from TinkerTech AU?
✅ Authentic Grade-A Cells Guaranteed – Sourced directly from verified manufacturers since 2017.
✅ Wide Range of Selections – Modified your battery choice to your needs.
✅ Trusted Australian Supplier for Universities, Engineers, Technicians, and Power Users – Providing Reliable Grade-A lithium-ion cells.
At TinkerTech AU, we offer a comprehensive selection of 21700 lithium-ion batteries, designed to provide reliable and efficient power for demanding applications.Our inventory includes trusted brands such as Samsung, Panasonic, LG Chem, Sony/Murata, Molicel, and our own TinkerTech AU line, ensuring compatibility with various High-Drain Devices like Power Tools, E-Bikes, and Industrial Equipment.
