Introduction

An 18650 battery is a type of lithium-ion battery that gets its name from its dimensions. It is cylindrical in shape and measures approximately 18mm in diameter and 65mm in length. These batteries are commonly used in electric vehicles, laptops, portable power banks, flashlights, and other electronic devices that require a rechargeable power source. 18650 batteries are known for their high energy density, long lifespan, and ability to deliver high current.

Capacity range
The capacity range of 18650 batteries can vary depending on the manufacturer and specific model. However, typically, the capacity of 18650 batteries can range from around 800mAh 18650 batteries (milliampere-hours) to 3500mAh or even higher for some advanced models. Higher capacity batteries can provide longer run times for devices before needing to be recharged. It’s important to note that the actual capacity of a battery can also be influenced by various factors such as discharge rate, temperature, and usage patterns.

Discharge rate
The discharge rate of 18650 batteries can also vary depending on the specific model and manufacturer. Generally, the discharge rate is measured in terms of “C.” For example, a 18650 battery with a discharge rate of 10C means it can deliver a current equal to 10 times its capacity. So, if the battery has a capacity of 2000mAh, it can deliver 20,000mA or 20A of continuous current.

Common discharge rates for standard 18650 batteries range from around 1C to 5C 18650 batteries , while high-performance or specialty batteries can have discharge rates of 10C or even higher. It’s important to consider the discharge rate when choosing a battery for your specific application to ensure it can handle the required power demands without overloading or damaging the battery.

In what form do we find 18650 batteries on the market

18650 batteries are commonly found in the market in individual cell form or as pre-installed battery packs.

Individual Cell Form: In this form, 18650 batteries are sold as single cells. They are typically packed in plastic or cardboard packaging to protect them during transport and storage. These individual cells are usually used in applications that require a single battery, such as flashlights or power banks. When purchasing individual 18650 cells, it is important to ensure that they are from reputable brands and suppliers to guarantee their quality and authenticity.

Pre-Installed Battery Packs: In some cases, 18650 batteries are sold in pre-installed 18650 battery packs. These packs are designed for specific devices or applications and can have multiple 18650 cells connected in series or parallel. For example, electric vehicles, laptop batteries, or power tool battery packs may use multiple 18650 cells to provide the required power and capacity. These pre-installed battery packs are often proprietary and need to be purchased from authorized sources or original equipment manufacturers (OEMs).

Regardless of whether you purchase individual cells or pre-installed battery packs, it is crucial to ensure that you are buying from trusted sources to obtain genuine and high-quality 18650 batteries.