TANZU 21V 21700 Lithium-Ion Rechargeable Battery Pack (3000mAh/6000mAh/9000mAh, 5/10/15 Cells) for Cordless Drills, High-Capacity Li-Ion Power Tool Battery

#### Product Overview

The 21700 battery is a high-performance lithium-ion battery named after its size (21mm diameter, 70mm length), which is widely used in electric vehicles, vaping devices, portable devices, and energy storage systems, etc. Compared with traditional 18650 batteries (18mm diameter, 65mm length), the 21700 battery has significantly improved energy density, capacity, and discharge performance, making it an important direction for the development of current battery technology.

#### Main Features

1. **High energy density**

The 21700 battery has a high energy density of up to 300Wh/kg, which can provide longer usage time. In the same size and weight, the 21700 battery can store more energy. Meet the needs of high-power devices

2. **High capacity**

The capacity of 21700 batteries is usually between 3000mAh and 5000mAh, which is higher than the 18650 battery with a capacity of 2000mAh to 3500mAh, making 21700 batteries more efficient in electric vehicles and large-scale energy storage systems.

3. **Excellent discharge performance**

The 21700 battery has a high discharge capacity, which can support short-term high-load applications, such as the acceleration of electric vehicles that require rapid current.

4. **Good safety**

Using an advanced battery management system (BMS), the 21700 battery can effectively protect in extreme situations, reducing safety risks. In addition, the battery shell is made of high-strength materials, increasing its impact resistance.

5. **Environmentally friendly**

The 21700 battery is manufactured and used in accordance with environmental standards, does not contain any harmful substances, and can be recharged multiple times. Help reduce resource usage

#### Difference between 21700 and 18650

- **Size and capacity**: 21700 batteries are larger and have higher capacity than 18650, allowing for longer usage.

- **Energy density**: 21700 batteries have higher energy density, suitable for high-power applications.

- **Application areas**: 21700 batteries are widely used in electric vehicles and large-scale energy storage systems, while 18650 batteries are used in smaller electronic devices.

#### Application areas

21700 batteries are widely used in many industries. In the field of electric vehicles, batteries can provide longer ranges. In electronic devices, batteries can support high-performance devices such as notebook computers and vaping devices. In the field of renewable energy, 21700 batteries can also be used in home and industrial energy storage systems to promote efficient use of energy.

#### Reasons to choose us

Choosing our 21700 batteries, you will get:

- **High quality guarantee**: We use the world's most advanced manufacturing process. To ensure stable and reliable battery quality