High-Capacity 21700 Li-Ion Battery – Reliable Power for Demanding Applications
Premium 3.7V 3750mAh (5000mAh option) lithium-ion cell with 40A continuous discharge, ideal for high-drain devices. Engineered with precision-cut electrodes and advanced NMC chemistry for stable voltage output and extended cycle life. Ultra-durable steel casing with pressure vent ensures safety in high-performance scenarios: electric tools, vaping mods, portable power stations, and DIY energy storage. Global wholesale pricing with bulk discounts – direct factory supply guarantees unbeatable value without compromising quality. Stock up for large-scale projects or resale with confidence.