High-Capacity 18650 & 21700 Lithium Batteries – Reliable Power for Demanding Applications
Premium 3.6V lithium-ion batteries with multiple capacity options (2500mAh to 4000mAh) for extended runtime. Ideal for flashlights, power tools, medical devices, and backup power systems. Engineered with high-density LiFePO4 cells for superior energy efficiency and long cycle life. Built-in safety features prevent overcharging and overheating. Ultra-durable steel casing ensures shock resistance and stable performance in extreme conditions. Compatible with most standard 18650/21700 battery compartments. Stock up in bulk for unbeatable wholesale pricing—perfect for resellers, OEMs, and industrial users. Globally sourced, rigorously tested, and ready to ship.