14500 Cells

With the same size as an AA battery, 14500 cells are rechargeable lithium-ion batteries that measure 14 mm in diameter and 50 mm in length. They offer ~3.7V compared to AA batteries at 1.2 to 1.5V, meaning they cannot be used specialized LED portable lighting as replacements unless explicitly stated in the device manual. 14500 cells are popular for high-drain, specialized LED portable lighting, small electronics, digital cameras, vaping devices, and other consumer related devices.