High-Performance 21700 Lithium-Ion Battery Pack
Ultra-durable 3.7V rechargeable lithium-ion batteries with premium-grade cylindrical cells (21700 size). Features high-capacity 40P, 45E, and 50E models (4000mAh–5000mAh) for extended runtime. Precision-engineered with advanced Li-ion tech for stable voltage output and low self-discharge. Ideal for power tools, electric vehicles, LED lighting, and portable devices. Reinforced steel casing + multi-protection circuit (overcharge/overheat/short-circuit proof). Bulk pricing available—global wholesale supplier with factory-direct savings.
Key Tech Specs:
- Cell Type: 21700 (21mm x 70mm) - Voltage: 3.7V (Nominal) - Capacity: 4000mAh–5000mAh - Cycle Life: 500+ charges - Weight: ~65g per cell Direct bulk sourcing cuts costs—no middlemen. Strict QC ensures safety & consistency. Power your projects reliably.