Custom 21700 Battery Packs
Customized 21700 Li-ion Battery Solutions Built for Performance
Litop delivers dependable 21700 lithium-ion battery packs engineered with strict quality control and innovative customization. We design and manufacture solutions tailored to your needs, ensuring excellent performance and reliability for specialized industries.
Typical Applications
Key Features
Featured 21700 Battery Pack Models
Professional lithium-ion battery packs for industrial and commercial applications
3.7V 21700 Li-ion Battery Pack
7.4V 21700 Li-ion Battery Pack
11.1V 21700 Li-ion Battery Pack
14.8V 21700 Li-ion Battery Pack
22.2V 21700 Li-ion Battery Pack
25.2V 21700 Li-ion Battery Pack
36V 21700 Li-ion Battery Pack
43.2V 21700 Li-ion Battery Pack
48V 21700 Li-ion Battery Pack
52V 21700 Li-ion Battery Pack
Everything You Need to Know About 21700 Lithium-ion Battery
A 21700 lithium-ion battery is a rechargeable cylindrical cell with standardized dimensions of 21mm in diameter and 70mm in length. Developed as a successor to the 18650 battery, it offers higher energy density, greater capacity, and improved power output. These features make 21700 batteries well-suited for demanding, high-power applications such as electric vehicles, energy storage systems, power tools, and advanced consumer electronics.
Key Features
Chemistry Options:
Available in various lithium-ion chemistries, including:
- • Lithium cobalt oxide (LCO): High energy density
- • Lithium manganese oxide (LMO): Enhanced safety and thermal stability
- • Lithium nickel manganese cobalt oxide (NMC): Balanced performance and safety
- • Lithium iron phosphate (LFP): Superior safety and long cycle life
Voltage & Capacity:
Nominal voltage is typically 3.6V or 3.7V, with capacities ranging from 3000mAh to over 5000mAh, depending on chemistry and manufacturer.
Discharge Performance:
Some variants are designed for high-drain applications, supporting continuous discharge rates up to 45A.
Cycle Life:
Durable cells provide 500–1500+ charge cycles.
Design Variations:
Options include button top or flat top, and protected or unprotected formats for diverse application requirements.
Benefits
High Quality & Safety:
21700 batteries undergo rigorous quality testing, ensuring reliable performance in various environments, including high-temperature conditions.
Wide Application Range:
Ideal for electric vehicles, renewable energy storage, robotics, e-bikes, power tools, consumer electronics, and more.
Advanced Technology:
Ongoing R&D ensures higher capacity, longer cycle life, and optimized performance—even under harsh conditions.
Sustainability:
Environmentally friendly and rechargeable, helping to reduce waste and support greener solutions.
Usage Notes
Protection Circuits:
Protected 21700 cells include features for overcharge, over-discharge, and short-circuit prevention, making them suitable for standalone use. Unprotected cells are generally used in battery packs with external battery management systems (BMS).
Compatibility:
Always ensure you select the right battery type as specified by the device manufacturer for safe and optimal performance.
21700 lithium-ion batteries are a reliable solution for businesses seeking efficient, high-performance power sources across a wide range of applications.
