High-Quality AS21700 3.7V 5000mAh Lithium Ion Battery

 High-Quality AS21700 3.7V 5000mAh Lithium-Ion Battery

Introducing our high-quality 21700 3.7V 5000mAh lithium-ion battery, which is designed for 

performance, durability, and versatility across multiple industries. This battery model is ideal 

for manufacturers and product developers looking for reliable power solutions in a wide 

range of applications, from consumer electronics to industrial equipment.

Battery Specifications

The 21700 3.7V 5000mAh lithium-ion battery is part of the cylindrical cell family. It offers 

significant improvements over traditional 18650 batteries in terms of both energy capacity 

and efficiency. Below are the key specifications:

l Model Number: 21700 3.7V 5000mAh

l Nominal Voltage: 3.7V

l Nominal Capacity: 5000mAh

l Cycle Life: 500+ cycles (with at least 80% capacity retention after 500 charge/discharge cycles)

l Cell Chemistry: Lithium-ion (Li-ion)

l Charge Voltage: 4.2V

l Discharge Cut-off Voltage: 2.75V

l Standard Charge Current: 0.2C (1A)

l Maximum Continuous Discharge Current: 3C (15A)

l Energy Density: High energy density, suitable for high-performance applications

Dimensions and Weight

The physical dimensions of the 21700 battery model make it a suitable choice for a variety of 

compact and portable devices. Below are the specific measurements:

n Diameter: 21mm

n Length: 70mm

n Weight: Approximately 70g

n Form Factor: Cylindrical

These dimensions make it slightly larger than the popular 18650 battery, but with significantly more 

capacity and better energy output. This increased capacity allows manufacturers to use fewer cells to 

achieve the same power levels, leading to lighter and more efficient battery packs.

Applications

The 21700 3.7V 5000mAh lithium-ion battery is highly versatile and can be used in a wide range of 

applications due to its high energy density, long cycle life, and strong discharge capabilities. 

Below are some of the key application areas:

1. Electric Vehicles (EVs)

Due to its high energy density and compact size, the 21700 battery is increasingly used in electric 

vehicles, such as electric bicycles, scooters, and even electric cars. Its large capacity and ability to 

handle high discharge rates make it an ideal choice for such energy-demanding applications.

2. Power Tools

The 21700 battery's high discharge rate and capacity make it suitable for use in cordless power tools 

like drills, saws, and other high-power equipment. Its long cycle life and reliability are highly beneficial 

for professionals who require long-lasting, powerful tools.

3. Energy Storage Systems (ESS)

In renewable energy systems, like solar and wind power storage, the 21700 battery is an excellent choice 

due to its long cycle life and energy storage efficiency. Its use in home and industrial energy storage 

solutions allows for better energy management and grid stabilization.

4. Consumer Electronics

The 21700 battery can be found in high-end consumer electronics that demand both long battery life 

and high performance. These include high-capacity power banks, laptops, VR devices, and high-performance 

cameras.

5. Medical Devices

This battery model is also used in various medical devices that require reliable and long-lasting power. 

Devices such as portable medical equipment, oxygen concentrators, and mobility aids can benefit from 

the 21700 battery’s performance.

6. Portable Lighting

Due to its high energy density, the 21700 battery is used in high-power flashlights and portable lighting 

equipment. Its long runtime and reliability make it suitable for professional lighting applications like 

search and rescue, security, and outdoor adventures.

7. E-bikes and Scooters

The 21700 battery is a popular choice for electric bicycles and scooters, offering extended ranges and 

more powerful performance. The higher capacity and energy density of the 21700 allow for longer 

rides and improved efficiency, contributing to the growing popularity of electric personal transportation devices.

Performance Advantages

1. Higher Energy Density

Compared to the 18650 battery, the 21700 model offers approximately 30-40% more energy capacity. 

This means fewer batteries are required to deliver the same amount of power, reducing the weight and 

volume of the battery pack. This feature is particularly useful for applications where space and weight 

are critical factors, such as in electric vehicles and portable devices.

2. Longer Runtime

The 5000mAh capacity of the 21700 battery translates to longer runtimes in battery-operated devices. 

Whether it's a power tool, an electric vehicle, or a consumer gadget, the extended capacity ensures 

that the device will operate for longer periods before requiring a recharge.

3. High Discharge Rate

With a maximum continuous discharge rate of 15A, the 21700 battery is well-suited for high-drain 

applications such as power tools and electric vehicles. It provides consistent performance even under 

heavy loads, ensuring that your devices will run efficiently without power loss.

4. Safety and Reliability

Safety is always a priority at A&S Power. Our 21700 3.7V 5000mAh battery comes equipped with 

built-in protection circuits to prevent overcharging, over-discharging, and short circuits. This makes 

the battery safe for use in a wide range of products without risk of malfunction.

5. Longevity

The battery's long cycle life ensures that it will continue to perform optimally over hundreds of charge 

and discharge cycles. This is especially important for applications like energy storage systems, electric 

vehicles, and medical devices, where reliability and long-term performance are essential.

Why Choose A&S Power's 21700 3.7V 5000mAh Battery?

At A&S Power, we have years of experience in manufacturing high-quality lithium-ion batteries. 

Our 21700 3.7V 5000mAh battery stands out for its superior performance, stringent safety standards, 

and exceptional reliability.

We offer customization options to meet your specific needs, and our team of experts is always available to 

provide technical support, ensuring that our batteries integrate seamlessly into your products. Whether you 

are looking for a reliable battery for industrial use, energy storage, or consumer electronics, our 21700 battery 

is a premium choice that meets and exceeds expectations.

In conclusion, the 21700 3.7V 5000mAh lithium-ion battery is the perfect solution for high-performance, 

long-lasting, and reliable power. Its versatility across multiple applications, coupled with our extensive 

certifications, makes it a leading choice for businesses seeking powerful, safe, and efficient energy solutions.