Avatar 21700 Battery – 4000 mAh, 30 A

Massive capacity meets high performance: the Avatar 21700 Battery delivers an impressive 4000 mAh of power and a manufacturer-rated 30 A continuous discharge, making it a solid choice for high-wattage vape mods and power-hungry electronics. 

Key Features

• 4000 mAh Capacity – One of the highest-energy 21700 cells available for extended usage.
• 30 A Discharge Rating – Designed for high-drain applications; real-world testing estimates optimal performance around 20 A. 
• Long Cycle Life – Retains up to 80% capacity after 1000 charge cycles. 
• Built-in Safety Chip – Offers overcharge and over-discharge protection for added peace of mind. 
• Compact 21700 Format – Fits newer mods and packs, with better energy density than traditional 18650 cells. 

Bench-Test Insights

Independent tests showed nearly the full advertised capacity (~3960–4000 mAh), but significant heating occurred when pushed to 30 A—20 A is considered a more sustainable continuous load. 

Technical Specifications

Safety Notice

⚠ Handle with care: Though it includes some protection circuitry, this is still a high-performance Li-Ion cell. Always use a dedicated Li-Ion charger. Carry in a battery case—never alongside keys or coins. Monitor for heat buildup during high loads. 

Related Products

• Nitecore D4 Battery Charger – Reliable charging for 21700 and other Li-Ion cells
• Battery Storage Case – Safe storage and transport for your batteries
• Our Avatar 21700 Battery Page – Browse related mods and 21700 accessories

Why Choose the Avatar 21700?

• Exceptional runtime and robust current for power-hungry applications.
• Built-in safety features and a long lifespan ensure reliability.
• Offers standout value within the high-capacity 21700 segment.