Showing all 7 results

21700 Battery Cells

A 21700 battery refers to a specific type of lithium-ion rechargeable battery cell. The designation “21700” indicates its dimensions, with a diameter of 21mm and a height of 70mm. These 21700 battery cells are widely used in various applications. These include electric vehicles, portable electronics, and renewable energy systems. Compared with 18650, 21700 batteries have a larger size, higher capacity, and better power output. They are suitable for high-performance applications, providing increased energy density.

Legend Battery is a leading 21700 battery supplier. We provide high-performance and high energy-density battery solutions. Our 21700 cells are mainly from Samsung, LG, Panasonic, Murata, and Molicel. When designing 21700 battery packs, our engineering team mainly chose these brands. More than 1 million PCS 21700 cells are assembled monthly in our manufacturing center. So, if you are looking for the 21700 battery bulk, please Send us an email 

Samsung 21700 Battery Cell

Samsung INR21700-50S Battery Cell

Samsung INR21700-40T Battery Cell

Samsung INR21700-50G Battery Cell

Samsung INR21700-48X Battery Cell

Samsung INR21700-50E Battery Cell

Samsung INR21700-53G Battery Cell

Molicel 21700 Battery Cell

Molicel INR-21700-P42A Battery Cell

Molicel INR-21700-P45B Battery Cell

Molicel INR-21700-P50B Battery Cell

LG 21700 Battery Cell

LG INR21700-M50LT Battery Cell

LG INR21700-M58T Battery Cell

LG INR21700-M50T Battery Cell

21700 li ion battery characteristics

High Capacity

Due to their larger size, 21700 batteries typically have higher capacities. This contributes to longer usage times in devices.

High Energy Density

These batteries offer high energy density. The 21700 battery cells provide substantial energy storage in a relatively compact size.

Long Cycle Life

They are designed for a long cycle life. The 21700 batteries can withstand numerous charging and discharging cycles without significant degradation.

Multiple Charge and Discharge

The 21700 lithium ion battery is rechargeable. They can be charged and discharged multiple times, providing long-term, reliable energy support.


The 21700 batteries are versatile. You can see them in electric vehicles, power tools, drones, energy storage systems, and more.


The 21700 batteries are becoming more widely adopted. Many devices are designed to accommodate this specific battery size.

21700 Battery Cells applications

UAV and FPV Drones Battery Pack


The 21700 battery is lightweight and high-energy, providing reliable battery life. It can meet the high-power needs of UAV and FPV drones.



Best options for you:


  • Molicel INR-21700-P42A battery cell
  • Molicel INR-21700-P45B battery cell
  • Molicel INR-21700-P50B battery cell
  • Samsung INR21700-40T battery cell
  • Samsung INR21700-50S battery cell

Efoil Electric Surfboard Battery Pack


The 21700 cells are lightweight. They have a waterproof design and a powerful, high-power output. The best 21700 battery provides reliable power for electric surfboards.


Best options for you:


  • Molicel INR-21700-P42A battery cell
  • Molicel INR-21700-P45B battery cell
  • Molicel INR-21700-P50B battery cell
  • Samsung INR21700-40T battery cell
  • Samsung INR21700-50S battery cell

Electric Motorcycle Battery Pack


The 21700 rechargeable battery has high capacity, high-temperature resistance, and supports fast charging. This provides high-performance power for electric motorcycles.


Best options for you:


  • Samsung INR21700-50G battery cell
  • Samsung INR21700-53G battery cell
  • Samsung INR21700-50E battery cell
  • LG INR21700-M50LT battery cell
  • LG INR21700-M58T battery cell

21700 battery vS 18650 battery

The competition between 21700 and 18650 batteries has become a focal point. They share the same fundamental principle but differ in size, capacity, and applications.

21700 Battery

  • Size: Larger with a diameter of 21mm and a height of 70mm.
  • Capacity: 4000mAh- 6000mAh. It has a higher capacity due to its larger size, providing more energy storage.
  • Energy Density: Higher energy density. This means more energy can be stored in the same physical size.
  • Discharge Current: Up to 45A. Higher discharge currents. They are ideal for power-hungry applications like electric vehicles.
  • Applications: They are commonly used in high-performance applications. Found in electric vehicles, power tools, and energy storage systems.

18650 Battery

  • Size: Smaller with a diameter of 18mm and a height of 65mm.
  • Capacity: 2000mAh- 4000mAh. They have a smaller capacity compared to 21700 batteries.
  • Energy Density: The 18650 battery has a lower energy density than the 21700 battery.
  • Discharge Current: Up to 35A. The 18650 batteries offer a moderate discharge, commonly found in standard electronics.
  • Applications: Widespread use in consumer electronics. Common in laptops, flashlights, and various portable electronic devices.

Why Choose Us

100% Genuine Brand Cells And Best Price

We offer the 100% genuine 21700 battery wholesale at the most competitive prices in the market. These brands include Molicel, Samsung, LG, Panasonic, and Murata/Sony. Our commitment is to provide customers with high-quality batteries while ensuring reasonable prices.

Get a Free Quote

Original Pallet and Carton Packaging

Legend Battery is committed to providing original pallet and carton packaging. This ensures optimal protection of the 21700 battery bulk during transportation and storage. We pay attention to every detail to ensure every battery you receive is in top condition.

Get a Free Quote

Fast and Flexible delivery

Our factory has over 100K PCS in stock to arrange delivery within 5 working days. We work with reliable logistics partners to ensure that the 21700 batteries get to you safely and quickly. They have been shipping lithium-ion batteries by air and sea since 2013. They only ship Li-ion batteries.

Delivery terms can be EXW, FOB, CIF, DDP, DDU

Get a Free Quote

FAQ About 21700 Battery Cells

We supply the following Brand 21700 Li-ion battery cells:

1. Molicel 21700 Li-ion battery cells: Molicel INR-21700-P42A, Molicel INR-21700-P45B, Molicel INR-21700-P50B

2. Samsung 21700 Li-ion battery cells: Samsung INR21700-40T, Samsung INR21700-50S, Samsung INR21700-50E, Samsung INR21700-50GB,
Samsung INR21700-48G, Samsung INR21700-50G, Samsung INR21700-53G, Samsung INR21700-48X, Samsung INR21700-30T

3. LG 21700 Li-ion battery cell: LG INR21700-M48, LG INR21700-M50, LG INR21700-M50U, LG INR21700-M50T, LG INR21700-M50LT, LG INR21700-M58T

4. Murata/Sony 21700 Li-ion battery cell: US21700VTC6A

Yes, we only sell Genuine Brand 21700 battery cells, because we purchase these Brand 21700 Li-ion battery cells from manufacturer directly and also use them to assemble our own battery packs, so we can 100% Guarantee they are Genuine Brand battery cells with Original pallet and carton packaging.

MOQ for trial samples order is 1 full carton, MOQ for mass production order: 1 full pallet, more details can be negotiated.

T/T 30% deposit after order confirmed, the 70% balance payment  before shipment.

Generally speaking, we will arrage the shipment within 5 working days after receiving your payment.

Yes, we can offer MSDS UN38.3, UL, CB, IEC62133, PSE etc.

The delivery terms we can offer: EXW, FOB, CIF, DDU, DDP.

You can ask your own forwarder to ship these Brand 21700 Li-ion battery cells by air or by sea. We also can help you to ship these battery cells by air or by sea, we have our own very professional forwarders who only ship lithium ion batteries to all over the world, no other goods.

Lithium Ion Battery Blogs and news

How Long Does A Drone Battery Last?

You are in a beautiful place. There are beautiful scenes around you, and nature is...

How Long Do Marine Batteries Last And How To Maintain

Introduction: For all boating lovers, knowing marine batteries is essential. Why? It brings confidence in...

Top 10 Drone Battery Manufacturers

Introduction: Batteries play a pivotal role in the fast-evolving world of drones. They determine these...

How To Repair Lithium Ion Battery Packs?

Introduction: Are you facing issues with your lithium-ion battery packs? Lithium batteries are everywhere, whether...

Top 10 EV Battery Manufacturers In The World

Introduction: The global shift towards sustainable transportation has been accelerating. At the heart of this...

Top 10 Lithium Ion Battery Manufacturers In India

Introduction: We are living in a fast-paced world today. Here, energy efficiency and sustainability are...

Top 10 Lithium-ion Battery Manufacturers In USA

Introduction: The world of technology continues to witness the creation and development. These numerous inventions...

10 Best 21700 Batteries For 2023

Introduction: In the world of portable electronic devices, the battery is the unsung hero that...