21700 Battery Lithium-ion Flat Top Cell Flashlight Battery [1-Pack]

Power up high-drain devices with a rechargeable 21700 lithium-ion flat-top battery—a reliable, long-lasting energy source for flashlights, e-bikes, vaping devices, and other demanding electronics. This 1-pack cell is designed to deliver steady performance and extended runtimes between charges.

• Chemistry: 21700 lithium‑ion chemistry delivers solid energy density and dependable runtime for demanding devices.
• Flat Top Design: Flat terminals ensure a secure connection with devices that require a flat contact surface.
• PCB Protection: Built‑in protection guards against overcharge, over-discharge, short circuits, and other faults for safer charging and discharging.
• Versatile Compatibility: Ideal for LED flashlights, vaping devices, electric bicycles, and a wide range of high‑drain electronics.
• Rechargeable & Eco-friendly: Reusable to cut waste and save money over time.
• 1‑Pack Convenience: Ready-to-use battery right out of the package.

This 21700 battery supports reliable power delivery for demanding devices, helping you enjoy longer runtimes between charges without frequent replacements. The flat‑top design paired with PCB protection means safer charging and a more secure connection in your flashlights, e‑bikes, and vaping setups. By choosing a rechargeable cell, you reduce waste and lower long‑term energy costs. For optimal use, always use a compatible charger, adhere to device specifications, and store in a cool, dry place away from extreme temperatures to maximize cycle life.