Grade A Lishen LR2170LA 3.6V 4000mAh 21700 Battery – High-Performance Power Solution

Premium lithium-ion construction with advanced NMC chemistry delivers stable 3.6V output and 4000mAh capacity. Features ultra-low internal resistance for 45A continuous discharge, optimizing high-drain device performance.

Precision laser-welded terminals and multi-layer safety protection (overcharge/overheat/short-circuit proof). Robust steel casing withstands extreme conditions (-20°C to 60°C).

Ideal for commercial drones, electric tools, medical devices, and high-end flashlights. Bulk orders available at unbeatable global wholesale pricing—direct factory sourcing ensures authenticity and cost efficiency.