Sofirn 21700 5000mAh Flat Rechargeable Li-ion Battery - 3.7V 48A 10C High-Drain Flat-Top Cell

Experience superior power delivery with the Sofirn 21700 5000mAh flat rechargeable lithium-ion battery — a high-performance flat-top cell designed for high-drain flashlights and demanding devices. This battery combines impressive 5000mAh capacity with a massive 48A (10C) continuous discharge current, ensuring stable, high-output performance even under heavy loads.

At a nominal 3.7V, it provides optimized and consistent voltage output, delivering reliable illumination without sudden drops — perfect for powerful LED torches that require sustained high current. The flat-top design offers excellent compatibility with a wide range of flashlights and mods that use protected or unprotected 21700 setups.

Key features and benefits:

• High capacity of 5000mAh (minimum 4600—4700mAh) for extended runtime on your favorite lights
• High discharge current up to 48A, ideal for high-drain applications and bright, long-lasting beams
• Optimized voltage at 3.7V for consistent, dependable flashlight performance
• High-density HD cell construction for durable, long-lasting reliability
• Excellent calendar and cycle life — built to maintain performance over many charge cycles
• Eco-friendly and versatile — suitable for flashlights, high-power tools, and other wide applications with no harmful pollutants
• High energy density — packs more power into the standard 21700 size for maximum efficiency

Whether you're upgrading your everyday carry torch, preparing for outdoor adventures, or powering professional-grade lighting gear, this Sofirn 21700 battery delivers the runtime and punch needed for intense use. Its robust build supports high-drain scenarios without compromise, making it a smart choice for users who demand both longevity and power.

Important safety and usage notes: Charge only with a quality lithium-ion charger rated for 21700 cells and high-current Li-ion batteries. Do not exceed safe discharge limits, overcharge, short-circuit, puncture, crush, or expose to extreme temperatures, water, or fire. Use in devices with appropriate protection circuits (especially for high-drain setups). Store in a cool, dry place, partially charged for long-term storage. For best cycle life, avoid full deep discharges and follow recommended charging practices.

Power your adventures with confidence — the Sofirn 21700 5000mAh flat-top brings high capacity, extreme discharge capability, and trusted reliability to every beam!