The **Tesla 18650 cell** is a proprietary [18650 cylindrical lithium-ion](/entry/_7RHY0mKlOEp2xsahAaNcbc) [cell](/entry/_4HwJfgRjCzfOI7z2XTzY0r) developed by Tesla and Panasonic. It is thought to be similar to the [Panasonic NCR18650BE cell](/entry/_1CZTpr2BFC76f54Q3vNuB4).

Product

Tesla 18650 cell

The **Panasonic NCR18650BE** is a [18650 cylindrical lithium-ion](/entry/_7RHY0mKlOEp2xsahAaNcbc) [cell](/entry/_4HwJfgRjCzfOI7z2XTzY0r) sold by Panasonic. The positive terminal has a distinctive triangular shape.

Panasonic NCR18650BE

A secondary cell is a [galvanic cell](/entry/_2azW7zIxVCeNrbXuRrsm2k) that can also be used as an [electrolytic cell](/entry/_2uDtUtOWJCL33X7zTAK8dK); in other words, it can be charged, then used to supply electrical energy to a device, then charged again. Rechargeable batteries are comprised of one or more secondary cells, as opposed to disposable batteries which are comprised of [primary cells](/entry/_7OCTF7b5Z4wM7KvEE16OtK).

Secondary cell

This proprietary battery module was developed by Tesla Inc for the original Model S (85kWh editions).
            Sixteen of these modules were assembled together to create the Tesla 85kWh battery in the first generation Model S, which was produced from 2012 until 2016.

Tesla 18650 battery module (5kWh)

An 18650 cell is a standard format [cylindrical lithium-ion](/entry/_75HaEKOi2Ir5UV84KH3CGk)
[cell](/entry/_4HwJfgRjCzfOI7z2XTzY0r), with a diameter of {this.get(prop=[[/prop/_3JjzqBJ9YLtRGuesdK0lWb]])}
and a length of {this.get(prop=[[/prop/_1PPhmzTVqhSwjbyZtAsIBm]])} (slightly larger than a
[AA battery](/entry/_1bWGkkQDaPxHwmcMkO5cbu)).
The 18650 cell has been used since the late 1990s and has been popular for a wide range of applications that
require a rechargeable battery - such as flashlights, laptops, power tools, and even electric vehicles. Due
to the popularity of the 18650 cell, they are usually an easily available, well-understood, and affordable
option.

18650 cell

TechConcept

The amount of energy that this device can store, usually in Watt-hours. For cells or batteries, can be calculated by multiplying the rated capacity, in ampere-hourse, by its nominal voltage.

Energy Capacity

A battery's capacity is the amount of electric charge it can deliver at the rated voltage. As individual batteries can vary significantly, a nominal capacity is usually given.

Battery Capacity

Nominal voltage is the value assigned to an electrical component or system to indicate its typical voltage. The actual voltage that the component or system operates at may vary significantly from the nominal voltage.

Is a	18650 cell
Used in	Tesla 18650 battery module (5kWh)
Battery Capacity	3155 mAh (*)
Energy Capacity	11.36 Wh
Nominal Voltage	3.6 V (*)

Tesla 18650 cell

Tesla 18650 cell

Properties

Contents