From 18650 to 21700, what are the technical upgrades of electric two-wheel lithium batteries?

In the past few years, with the rapid popularization of electric travel, the technology of electric two-wheeler lithium battery has also been continuously iterating. From the widely used 18650 battery cells in the early days to the 21700 battery cells that more and more brands are turning to now, this change is not only a digital upgrade, but also an all-round improvement in energy density, battery life, safety and life.

So, as consumers, what key technical differences should we understand? Below we analyze from several core dimensions to help you make a more informed decision when choosing a lithium battery.

1. Significantly improved energy density

Compared to the traditional 18650 battery cell (18mm diameter, 65mm length), the 21700 battery cell (21mm diameter, 70mm length) has a slightly increased size, but the single cell capacity has increased by more than 35%. In other words, in the same space, the 21700 battery can provide longer battery life, allowing your electric two-wheeler to run farther and charge less, greatly improving the user experience in daily commuting.

This is why more and more users are looking for high capacity e-scooter batteries, especially in urban transportation scenarios, where the demand for battery life is increasing.

2. Better heat dissipation performance and structure

The 21700 battery cell adopts a more advanced internal structure design, which not only improves the energy density, but also has more stable heat dissipation performance. In the hot summer or long-term riding scenarios, the internal temperature rise of the battery is better controlled, thereby improving the battery life and safety.

For consumers who focus on long-term stability, this means that your electric two-wheeler lithium battery will not only have better performance, but also last longer.

3. A more reasonable balance between cost and performance

The manufacturing cost of 21700 battery cells is gradually decreasing. Without sacrificing performance, it has become a very cost-effective lithium battery solution.

This is good news for users who need to replace batteries - you can get a better lithium battery for scooters with a longer life and higher performance at a more reasonable price.

4. Smart BMS system matching is more mature

With the upgrade of battery cells, the matching BMS (battery management system) has also been optimized accordingly. The 21700 battery supports more sophisticated current control and temperature management, and is more intelligent in terms of charging, discharging and protection functions. This is a key upgrade for users who are concerned about safety and system stability.

From 18650 to 21700, it is not only an evolution of specifications, but also represents a leap in the overall performance of electric two-wheel lithium batteries. If you are considering replacing batteries or looking for a better solution for your brand of electric vehicles, then 21700 technology is undoubtedly a more trustworthy choice.

If you want to know more about customized solutions for two-wheeled electric vehicle lithium batteries, or want to obtain technical parameters of different battery cell configurations, please feel free to contact us. We will provide you with professional one-stop battery solutions.