Lithium-ion/NMC 21700

21700 NMC Batteries – High-Energy Ternary Lithium Cells, The Optimal Balance of Runtime and Power

Welcome to our 21700 NMC Battery collection. NMC (Nickel Manganese Cobalt) is the most widely deployed chemistry in 21700 cylindrical cells today. Renowned for its exceptional energy density, flexible high-rate capability, and mature supply chain, NMC 21700 cells serve as the preferred power core for electric vehicles, premium power tools, high-lumen flashlights, vaping devices, and portable energy storage. This collection features genuine Grade-A NMC 21700 cells from Samsung, LG, Murata, Molicel, EVE, BAK, and other Tier-1 manufacturers—spanning high-capacity runtime champions (5000mAh+) to ultra-high-drain performers (30A–45A).

What Is an NMC 21700 Battery?

NMC (LiNiMnCoO₂) 21700 cells utilize a cathode material composed of nickel, manganese, and cobalt in carefully tuned ratios. By adjusting the proportions of these three elements, manufacturers strike different balances between energy density, power output, and cycle life. NMC 21700 cells feature a nominal voltage of 3.6V–3.7V (full charge 4.2V) and rank among the most commercially successful high-performance lithium-ion cells available.

Core Advantages of 21700 NMC Batteries

• Class-Leading Energy Density: Typical capacities range from 4000mAh to 5000mAh, with flagship models (e.g., Samsung 50E, LG M50LT) reaching 5000mAh—delivering extended runtime from a single cell.
• Broad Power Spectrum: From 10A high-capacity cells to 45A ultra-high-drain beasts (e.g., Molicel P45B), NMC 21700 covers everything from microamp standby to hundred-watt power delivery.
• Low Internal Resistance, Minimal Heat: Power-oriented NMC 21700 cells feature IR as low as 8mΩ–15mΩ, ensuring stable voltage and controlled temperature rise under heavy loads for longer cycle life.
• Superior Pack Efficiency: Compared to 18650, fewer cells are required to achieve a given capacity—reducing welding, BMS, and structural costs while improving pack reliability.
• Mature Supply Chain: Global Tier-1 manufacturers prioritize NMC 21700 production, ensuring stable supply and continuously improving cost-performance.

21700 NMC Battery Subcategory Guide

Subcategory	Positioning	Typical Capacity	Continuous Discharge	Best For
High-Capacity NMC 21700	Maximum runtime priority	4800mAh–5000mAh	8A–15A	Flashlights, power banks, portable power stations, IoT sensors
Balanced NMC 21700	Runtime & power balance	4000mAh–5000mAh	20A–25A	Power tools, e-bikes, portable medical devices
Ultra-High-Drain NMC 21700	Maximum current burst priority	3000mAh–4500mAh	30A–45A	High-power vaping, professional power tools, RC racing, drones

Popular 21700 NMC Cell Models – Quick Reference

Model	Brand	Nominal Capacity	Continuous Discharge	Type	Recommended Application
INR21700-50E	Samsung	5000mAh	10A	High-Capacity	Flashlights, energy storage, IoT
INR21700-50S	Samsung	5000mAh	25A	Balanced	Power tools, e-bikes, high-output flashlights
INR21700-40T	Samsung	4000mAh	35A	Ultra-High-Drain	Professional power tools, high-power vaping
INR21700-30T	Samsung	3000mAh	35A–40A	Ultra-High-Drain	Competition vaping, RC models
Molicel P42A	Molicel	4200mAh	45A	Ultra-High-Drain	High-load power tools, racing drones
Molicel P45B	Molicel	4500mAh	45A	Ultra-High-Drain	Upgraded P42A, capacity and power combined
Molicel P50B	Molicel	5000mAh	25A	Balanced	Premium power tools, portable power
LG M50LT	LG	5000mAh	10A	High-Capacity	EVs, energy storage systems
Panasonic NCR21700A	Panasonic	4800mAh	10A	High-Capacity	Industrial equipment, medical devices
EVE 21700-50E	EVE	5000mAh	10A	High-Capacity	Cost-effective storage & consumer electronics
BAK N21700CG-50	BAK	5000mAh	15A	High-Capacity	Power tools, light EVs

Typical Specifications (21700 NMC)

Parameter	Typical Values
Nominal Voltage	3.6V–3.7V
Full Charge Voltage	4.2V ±0.05V
Discharge Cut-off Voltage	2.5V–2.8V
Capacity Range	3000mAh – 5000mAh
Continuous Discharge Current	8A – 45A (model dependent)
Internal Resistance (AC 1kHz)	8mΩ – 25mΩ
Cycle Life	300 – 1000 cycles (≥80% capacity retention)
Operating Temperature	Charge: 0°C~45°C / Discharge: -20°C~60°C
Dimensions	Diameter 21.0mm–21.5mm × Length 70.0mm–71.0mm (unprotected)

NMC 21700 vs. LiFePO₄ 21700 vs. Protected 21700

Parameter	NMC 21700 (This Collection)	IFR21700 / LiFePO₄	Protected 21700
Nominal Voltage	3.6V–3.7V	3.2V	3.7V (NMC core)
Capacity Range	3000mAh–5000mAh	1800mAh–3000mAh	4000mAh–5000mAh
Max Continuous Current	8A–45A	3A–10A	5A–10A
Safety Profile	Good (requires protection circuit)	Excellent (inherently safe)	Built-in overcharge/discharge/short protection
Cycle Life	500–1000 cycles	2000–5000+ cycles	500–1000 cycles
Best For	High-energy/high-power consumer & industrial devices	Solar storage, medical, safety-critical systems	Consumer flashlights, DIY kits

Typical Applications

Application	Recommended NMC Type	Suggested Models
High-lumen flashlights / searchlights	High-Capacity / Balanced	Samsung 50E, 50S, Molicel P50B
Power tools (drills, saws, grinders)	Ultra-High-Drain / Balanced	Samsung 40T, Molicel P42A/P45B
Vaping / high-wattage mods	Ultra-High-Drain	Samsung 30T/40T, Molicel P45B
E-bike / e-scooter packs	High-Capacity / Balanced	Samsung 50E/50S, LG M50LT
Portable power stations	High-Capacity	Samsung 50E, EVE 50E, LG M50LT
RC models / drones	Ultra-High-Drain	Molicel P42A/P45B
Portable medical devices	High-Capacity / Balanced	Panasonic NCR21700A, Samsung 50S
Industrial equipment / AGV packs	High-Capacity	LG M50LT, Samsung 50E

How to Choose the Right 21700 NMC Battery?

Your Requirement	Recommended Subcategory	Suggested Model
I need maximum runtime; device power is moderate	→ High-Capacity	Samsung 50E, LG M50LT, EVE 50E
I need a balance of runtime and power	→ Balanced	Samsung 50S, Molicel P50B
I need extreme current output for vaping or pro tools	→ Ultra-High-Drain	Molicel P45B, Samsung 40T/30T
I need bulk quantities or custom packs	Contact our sales team	—

⚠️ Usage & Safety Guidelines

• Use a proper 4.2V Li-ion charger: NMC 21700 cells require a charger with a 4.2V cut-off. Never use a 3.65V LiFePO₄ charger, and never overcharge.
• Do not mix with LiFePO₄ cells: NMC and LiFePO₄ have different voltage platforms. Never mix them in the same device or battery pack.
• Avoid over-discharge: Stop discharging when voltage drops below 2.5V–2.8V per cell. Recharge promptly to prevent permanent capacity loss.
• Discontinue use if wrap is damaged: A torn or damaged wrap can cause short circuits. Replace the wrap or discontinue use immediately.
• Avoid high temperatures: Keep away from fire, direct sunlight, and hot enclosed spaces.
• Recycle responsibly: Dispose of used cells at designated recycling facilities.

Why Choose Our 21700 NMC Batteries?

• Genuine Grade-A Cells: Direct sourcing from Samsung, LG, Panasonic, Molicel, EVE, BAK, and other Tier-1 manufacturers. 100% authentic—no recycled or counterfeit cells.
• Fully Tested & Matched: Every batch undergoes capacity grading, IR testing, and voltage sorting. Industrial-grade matching services available for pack builders.
• Complete Portfolio: Covers High-Capacity, Balanced, and Ultra-High-Drain NMC 21700 series—one-stop shopping for all requirements.
• Flexible Purchasing: Single-cell retail, multi-pack discounts, tiered bulk pricing, and custom series/parallel pack assembly.
• Certified & Documented: UN38.3, MSDS, CE, RoHS documentation provided for seamless international shipping.
• Expert Technical Support: Guidance on cell selection, pack design, BMS integration, and after-sales service.

👇👇👇 Browse the product list below and filter by capacity or discharge current to find the perfect 21700 NMC cell for your application. For volume quotes or custom pack solutions, please contact our engineering team.