An 18650 battery [1] or 1865 cell [2] is a cylindrical battery size (often lithium-ion battery or sodium ion battery) common in electronic devices. The batteries measure 18 mm (0.71 in) in diameter by 65.0 mm (2.56 in) in length, giving them the name 18650. [3] The battery comes in many nominal voltages depending on the specific chemistry used.

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Nov 12, 2022 · What is a 18650; protected versus unprotected cells; best 18650 battery, charger and flashlight; and top picks for best 18650 battery.

The 18650 is a lithium-ion battery classified by its size, which is slightly larger than a AA battery. The advent of the 18650 brought along a new age of li-ion power which continues today, providing high-current discharge with a superior capacity compared to other rechargeable chemistries.

18650 Battery Case 4Pack Battery Set, 3400mAh Battery for Flashlights, Headlights, Fans, Digital Cameras, Toys, Radios, Speakers, Surveillance Equipment, etc.

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Universal 4 Pack 18650 Rechargeable Battery Set, 3600mAh 3.7V Button Top Battery with Storage Holder Case for Doorbells, Flashlights, Headlamps, Cameras, Toys, and Remote Controls

Feb 21, 2025 · What is a 18650 battery and The?18650 rechargeable lithium-ion battery?is a cylindrical cell known for its high energy density and versatility, making it ideal for various applications, from laptops to electric vehicles.

Feb 8, 2021 · There are as many brands of 18650 batteries as there are uses. 18650 batteries are some of the most versatile on the market. They can be used to power just about anything, from electric cars to digital cameras.

Jan 19, 2025 · A 18650 battery cell is a lithium-ion rechargeable battery commonly cylindrical in shape, measuring 18mm in diameter and 65mm in height. It is widely used in various applications due to its high energy density and rechargeability.