18650 battery
An 18650 battery or 1865 cell is a cylindrical lithium-ion battery common in electronic devices. The batteries measure 18 mm (0.71 in) in diameter by 65 mm (2.56 in) in length, giving them the name 18650. The battery is 3.7 volts.
Panasonic 18650 batteries inside a laptop. Each cell has a capacity of 2450 mAh. | |
| Type | Power source |
|---|---|
| Working principle | Electrochemical reactions, Electromotive force |
| First production | 1994 |
| Pin configuration | Anode and Cathode |
| Electronic symbol | |
Panasonic first developed the 18650 battery in 1994 "when there was a growing need for ever smaller and lighter storage batteries that could be used for ever longer periods of time". They are now commonly used in power tools, electric bicycles, laptops, and electric vehicles.
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