Where to Buy 18650 Batteries: A Comprehensive Guide

Where to Buy 18650 Batteries: A Comprehensive Guide


Are you in search of a reliable and long-lasting battery for your flashlight, vape, or other electronic devices? Look no further than the 18650 battery! These rechargeable lithium-ion batteries have become increasingly popular due to their high capacity and versatility. But where can you find them? In this comprehensive guide, we’ll explore everything you need to know about buying 18650 batteries – from sizes and brands to storage tips and online purchasing options. So let’s dive in and power up together!

18650 Battery Sizes

18650 batteries are cylindrical in shape, measuring 18mm in diameter and 65mm in length, hence the name “18650.” They come in various lengths and capacities, depending on their intended use. The most common size is the standard 18650 battery that can be found in many electronic devices.

However, there are also shorter versions of the battery available known as 18350 or even shorter ones known as16340s. These smaller batteries may not have the same capacity as a standard-sized one but offer more flexibility when space is limited.

On the other hand, some applications require larger capacity cells such as laptops and electric vehicles. In these cases, an extended version of an 18650 battery called a “26650” with higher capacity may be needed to fit into larger compartments.

When purchasing an 18650 battery for your device or project it’s important to ensure you select the correct size according to your needs. Always check with your manufacturer’s recommendations before making any purchases to avoid disappointment later on down the line.

What is the Difference Between 18650 Batteries and CR123A Batteries?

When it comes to batteries, there are a lot of options available in the market. Two commonly used types are 18650 and CR123A batteries. Both offer advantages in terms of power output and longevity, but what sets them apart?

Firstly, let’s discuss the physical differences between these two battery types. The 18650 battery is cylindrical with a diameter of 18mm and length of 65mm while the CR123A battery is also cylindrical but smaller than an AA battery.

One major difference between these two types is their voltage output levels. An 18650 typically outputs around 3.7 volts whereas a CR123A has a higher voltage output at about 6 volts.

Another factor to consider when choosing between these two batteries is their capacity – or how much energy they can store. Generally speaking, most high-quality 18650s have higher capacities compared to CR123As.

In terms of cost-effectiveness, both batteries seem to be priced similarly per unit although it should be noted that long-term costs may vary depending on usage frequency and other factors.

Ultimately, which type you choose depends on your intended use case as well as your personal preferences for size and price point.

18650 Battery Brands

When it comes to 18650 batteries, the brand you choose can make a big difference in terms of quality and performance. Here are some popular brands that you may want to consider:

1. Panasonic: Known for their high-quality lithium-ion cells, Panasonic is a trusted name when it comes to rechargeable batteries.

2. Samsung: Samsung offers a wide range of 18650 batteries that are known for their long lifespan and reliability.

3. Sony: Another well-known brand in the battery industry, Sony’s 18650 cells are known for their high capacity and consistent performance.

4. LG Chem: LG Chem is a major player in the battery industry, offering reliable and high-performing 18650 cells that are used in everything from laptops to electric vehicles.

5. Efest: For those who need higher discharge rates or specialized features like built-in protection circuitry, Efest offers a wide selection of 18650 batteries designed with specific applications in mind.

No matter which brand you choose, be sure to do your research beforehand so you know what type of battery will best meet your needs!

Buying 18650 Batteries Online

When it comes to buying 18650 batteries, online shopping can be a convenient option. However, there are some things you should consider before making your purchase.

Firstly, make sure you choose a reputable and trustworthy seller. Check reviews from other customers and ensure that the website is secure for online transactions.

Next, pay attention to the specifications of the battery such as capacity and voltage to ensure that it meets your needs. It’s also important to check if the battery has any additional features like overcharge protection or short circuit prevention.

Another factor to consider is price – compare prices across different websites but don’t always go for the cheapest option as quality could be compromised. Look out for deals or discounts on bulk orders too.

When receiving your order, inspect the packaging carefully and test the batteries immediately upon arrival to ensure they are functioning correctly.

Buying 18650 batteries online can be a great option if you take necessary precautions beforehand.

Tips for Storing 18650 Batteries

Proper storage of 18650 batteries is crucial for their safety and longevity. Here are some tips to ensure your batteries stay in top condition:

Firstly, avoid exposing the batteries to extreme temperatures. High heat can cause them to degrade faster, while cold temperatures can reduce their capacity.

Secondly, store your batteries in a dry and ventilated area. Avoid damp environments as it may damage the battery’s internal components.

Thirdly, keep the contacts of your 18650 batteries clean and free from dust or debris by wiping them periodically with a dry cloth.

Fourthly, always keep your batteries in a case or container specifically designed for storing lithium-ion cells. This will prevent any accidental short-circuiting that could lead to explosions or fires.

Never leave your fully charged battery unattended for extended periods of time as this can also shorten its lifespan.

By following these simple tips when storing your 18650 batteries you’ll be able to extend their life cycle and ensure they remain safe for use over time.


To wrap up, 18650 batteries are an essential component of many devices and applications. They come in different sizes, brands, and types that cater to various needs and preferences. Knowing where to buy them is crucial to ensure that you get the best quality and value for your money.

Whether you choose to purchase 18650 batteries online or in physical stores, always remember to check their specifications, certifications, and reviews. Additionally, be mindful of how you store them as this can affect their performance and lifespan.

We hope that this comprehensive guide has provided you with valuable insights into buying 18650 batteries. By following these tips and guidelines, rest assured that you’ll have a reliable power source for your gadgets or projects anytime!