CB UN38.3 Certified 21700 Lithium-Ion Battery Pack
High-capacity 7.4V 10Ah rechargeable battery with premium 21700 cells for superior energy density and long cycle life. Fully compliant with UN38.3 safety standards, ensuring reliable performance for industrial, medical, and consumer electronics applications. Robust construction features precision-welded nickel strips and multi-layer PCB protection against overcharge, over-discharge, and short circuits. Ideal for power tools, drones, portable medical devices, and custom DIY projects requiring stable, high-output power. Globally sourced components guarantee batch consistency, backed by our wholesale pricing advantage for bulk orders. Upgrade to a safer, higher-efficiency solution without compromising durability or affordability.