What are the differences between 18650 and 21700 batteries?

Understanding the Basics

When it comes to rechargeable batteries, two types often come up in discussions: 18650 and 21700 batteries. But what are the differences between 18650 and 21700 batteries? Let’s break it down.

If you are looking for more details, kindly visit What are the differences between 18650 and 21700 batteries?.

Size Matters

The first thing you'll notice is the size. A 18650 battery measures 18mm in diameter and 65mm in height. In contrast, the 21700 is larger, measuring 21mm in diameter and 70mm in height. Think of it like this:

1. 18650: Compact and slim.
2. 21700: Bigger and bulkier.

So, if you're using devices with space constraints, the 18650 may be a better fit.

Capacity and Power Output

Another key difference is in their capacity. The 21700 typically has a higher capacity. This means it can hold more energy. A standard 18650 battery might have a capacity of around 2000-3500mAh. On the flip side, a 21700 battery can often range from 3000-5000mAh. Here's how they differ:

1. 18650: Lower capacity, suitable for standard devices.
2. 21700: Higher capacity, ideal for high-performance applications.

This extra capacity means longer usage between charges for devices that demand more power.

For more information, please visit Charging Differences Between 18650 and 21700.

Applications

You may be wondering where each battery type is commonly used. The 18650 is popular in laptops, flashlights, and e-cigarettes. Meanwhile, 21700 batteries are gaining ground in electric vehicles and high-performance flashlights. A quick overview:

1. 18650: Common in everyday electronics.
2. 21700: Preferred in advanced tech solutions.

So, if you’re building or upgrading your gear, consider what you need the battery for.

Availability and Cost

Availability can also be a deciding factor. 18650 batteries have been around longer, making them widely available. You’ll find them in many stores and online shops. On the other hand, 21700 batteries are newer and might be less available. When it comes to cost:

1. 18650: Generally cheaper.
2. 21700: Might be pricier due to its advanced specs.

But remember, investing in a good battery can save you in the long run.

Conclusion

To sum up, when asked, "What are the differences between 18650 and 21700 batteries?" the answer boils down to size, capacity, applications, availability, and cost. Each type has its own strengths, depending on your needs. If you have more specific questions, feel free to contact us. We are here to help you find the right battery for your device or project. If you need a supplier for these batteries, we can assist with that too!