When it comes to the emergence of the 21700 battery, we have to mention Tesla. The 21700 battery was initially developed by Panasonic for Tesla. At the investor's press conference on January 4, 2017, Tesla announced that the new 21700 battery jointly developed by Tesla and Panasonic would be mass produced in Gigafactory Super Battery Factory. Tesla CEO Mask said that the electricity density of the 21700 new battery is the highest energy density and lowest cost battery in the world, and the price will be more accessible.

Many people are asking what is the difference between 18650 battery and 21700 battery. The 21700 battery is slightly larger than the 18650 battery. If you want to know the differences between the 21700 battery and the 18650 battery, let's take a look at the differences between the 21700 battery and the 18650 battery.

The meaning of 21700 battery actually refers to the cylindrical battery with an outer diameter of 21mm and a height of 70.0mm. There are two types of 21700 batteries on sale, 21700/4200mAh and 21700/3750mAh.

Advantages of 21700 battery

The energy density of the 21700 lithium battery is higher than that of the well-known 18650 battery. The number of single batteries in use can be greatly reduced, and the cost will be reduced after grouping. The capacity of one 18650 battery is about 2600-3600 mA, while that of one 21700 battery is more than 4000 mA. At present, 21700/5000 mAh has appeared on the market. The larger capacity is more and more beneficial to extend the endurance of modern equipment.

Advantages of 18650 Lithium Battery
The volume and the balance of safety coefficient have stronger circulation characteristics than the common lithium cobalate raw materials. Due to technical reasons, its early nominal voltage is limited and its application fields are also limited. The nominal voltage of rechargeable battery has already reached, and the capacity has already reached or exceeded the level of lithium cobalate battery. So now most people like to use 18650 lithium battery pack.

Differences between 21700 and 18650 lithium batteries

Compared with the 18650 battery, the 21700 battery is a lithium ion battery, but the lithium ion battery has different specifications and the same voltage, but the difference is in size and battery capacity. The 21700 battery is certainly larger than the 18650 battery, and the capacity is also up to.