Semi-solid 21700 battery cell

What is a 21700 lithium ion battery?

21700 Li-ion battery cells are a popular and relatively new standard for rechargeable lithium-ion batteries. Named after their dimensions (21mm in diameter and 70mm in length), these cells offer a larger capacity and higher energy density compared to the older 18650 format.

What is the production capacity of 21700 battery cells?

This is especially evident in applications such as two-wheeled transportation, smart homes, power tools, consumer electronics, and portable energy storage. The capacity of 21700 battery cells has continuously broken through as their application scope expands. Currently, the highest production capacity available in the market is 21700-5.3Ah.

Are 21700 battery cells a good choice?

In the past two years, 21700 battery cells have gained widespread use in the small power market due to their higher energy density and overall cost advantages compared to traditional 18650 cells.

What is a 21700 cell?

For this article we will concentrate on the 21700 format, but this is migrating towards the 46mm diameter 46xx class of cylindrical cells in a push to reduce cell manufacturing costs. The 21700 cell increased the working volume over the 18650 by a factor of >1.4x 21700 => ~21mm in diameter and ~70.0mm long

What are the technical specifications of 21700 battery?

Here we have listed all the possible technical 21700 battery specifications that can be very useful in executing any technical design of your product or gadgets. The 21700 battery is a Li-ion battery named after its 21mm × 70mm cylindrical size (diameter × height).

How big should a 21700 cell be?

The 21700 cell increased the working volume over the 18650 by a factor of >1.4x 21700 => ~21mm in diameter and ~70.0mm long These dimensions vary between manufacturers. Using data from the Cell Database we can see that 70g is a good nominal figure for the mass of a 21700 cell. The 21700 cell by definition should be 21mm in diameter and 70mm high.