A 510 battery is a type of battery commonly used in electronic cigarettes and other vaping devices. The name "510" refers to the threading on the battery, which is compatible with a wide range of vaping devices. 510 batteries are known for their durability and long-lasting charge, and are a popular choice among vapers. Some 510 batteries are rechargeable, while others are disposable. The size and capacity of 510 batteries can vary, so it's important to choose the right battery for your specific vaping device.