21700 4000mAh High-Rate Li-ion Cell 10C (40A)

Genuine 4000mAh Real Capacity
Guaranteed 4000mAh true capacity with zero false labeling ensuring accurate power delivery for all your devices.
10C High Rate Continuous Discharge
Supports 10C 40A continuous discharge perfect for high drain applications like drones UAVs and power tools.
Stable 3.7V Nominal Voltage
Features a steady 3.7V nominal voltage with consistent output to keep your equipment running reliably.
High Energy Density 14.8Wh
Delivers 14.8Wh energy in a compact 21700 form factor offering great power per unit size.
Optimized for Drones and UAVs
Specially engineered to meet the high power demands of drones UAVs and other heavy duty portable electronics.
Reliable Li-ion Chemistry
Built with advanced lithium ion chemistry for stable performance low internal resistance and long service life.
No False Labeling Promise
Strict quality control ensures every cell meets its rated specifications eliminating inflated capacity claims.
Robust 21700 Standard Form Factor
Standard 21700 size fits most compatible battery holders packs and equipment with reliable fit and connection.