PEK 21700 4500mAh 3.7V High-Performance Battery

Ultra-High Capacity
4500mAh energy density delivers extended runtime for power-hungry devices, outperforming standard 21700 batteries.
Premium Lithium-Ion Technology
Built with Grade A Li-ion cells for stable 3.7V output, low self-discharge, and 1000+ charge cycles.
Robust & Safe Design
Features explosion-proof casing, overcharge protection, and temperature control for DIY projects, flashlights, and digital teaching tools.
Versatile Application
Ideal for portable vacuums, medical devices, drones, and high-drain electronics requiring reliable, long-lasting power.
Bulk Savings Advantage
Direct factory pricing ensures the lowest wholesale rates for bulk orders—no middlemen, no markup.
Global Compliance
Certified to meet international safety standards (CE/RoHS), ensuring hassle-free shipping worldwide.