When did 18650 batteries come out?

Cylindrical lithium-ion battery

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• battery
• cell

Panasonic batteries inside a laptop. Each cell has a capacity of mAh.

TypePower source

Working principle

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Electrochemical reactions, Electromotive force

First production 

Pin configuration 

Anode and CathodeElectronic symbol

An battery[1] or cell[2] 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 .[3] The battery comes in many nominal voltages depending on the specific chemistry used.

Panasonic first developed the battery in "when there was a growing need for ever smaller and lighter storage batteries that could be used for ever longer periods of time".[4] They are now commonly used in power tools, electric bicycles, laptops, and electric vehicles.[5]

Chemistry

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batteries are most commonly lithium-based.[citation needed]

By , some sodium-ion variants were available in the 18mm x 65 mm cylindrical cell form factor as well.[6][better source needed]

Packs

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A generic BMS for 4 series lithium-ion cells ('4s BMS')

batteries are commonly used in packs, where a battery management system (BMS) is required, especially once cells age and perform differently. BMS boards balance the voltage of cells in series and protect against over- and under-discharge.

Products using cells

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battery cells are used in a wide variety of products from the s through the s, and are widely regarded as the most produced lithium-ion cell size.[7] / cells are used in many laptop computer batteries, cordless power tools, many electric cars, electric scooters,[8] most e-bikes, older portable powerbanks, electronic cigarettes,[9][10] portable fans, and LED flashlights. Nominal voltage is 3.6-3.7 V.[11][5]

In the electric automobile sector, they are used in the first three vehicles manufactured by Tesla, the first-generation Roadster (late s), Model S (+), and the Model X (+).[12]

See also

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References

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