18650 may refer to:

• 18650 battery, a form factor size for rechargeable lithium-ion battery cylindrical cells
• (18650) 1998 FX₁₀; a main-belt asteroid, Asteroid 18650, the 18650th asteroid registered
• ISO 18650, an international standard on construction
• The number 18650

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• All pages with titles beginning with 18650
• All pages with titles containing 18650
• 1865 (disambiguation)

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