18350 vs 14500 Batteries: What are the Differences?
18350 vs 14500 Batteries

18350 vs 14500 Batteries: What are the Differences?

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Batteries are an essential part of many electronic devices, from flashlights to cameras to vape pens. With so many different types of batteries available, it can be challenging to know which one is the best fit for your device. Two common types of batteries are the 18350 and the 14500.

In this article, we will compare the 18350 and 14500 batteries in terms of capacity, voltage, charging, price, and safety. By understanding the differences between these two types of batteries, you can make an informed decision when choosing a battery for your electronic device.

18350 Batteries

The 18350 battery is a lithium-ion rechargeable battery that measures 18mm in diameter and 35mm in length. It’s a relatively small battery, but it has a high capacity of around 1200-1500mAh. This makes it a popular choice for electronic devices that require a lot of power, such as high-powered flashlights, vaporizers, and laser pointers.

One of the advantages of the 18350 battery is its high capacity, which means it can provide more power for longer periods of time. It’s also a relatively stable battery, with a low self-discharge rate, which means it can hold its charge for longer periods of time when not in use. However, its larger size can limit its usefulness in smaller electronic devices.

Check also – 18350 vs 18650 Batteries: What are the Differences?

14500 Batteries

The 14500 battery is also a lithium-ion rechargeable battery, but it’s smaller than the 18350 battery, measuring 14mm in diameter and 50mm in length. Despite its smaller size, it still has a respectable capacity of around 700-800mAh. This makes it a popular choice for smaller electronic devices, such as flashlights, cameras, and remote controls.

One of the advantages of the 14500 battery is its smaller size, which makes it a good fit for smaller electronic devices. It’s also lightweight and easy to carry, making it a good choice for portable devices. However, its smaller size also means that it has a lower capacity than the 18350 battery, so it may not provide as much power for as long.

Differences Between 18350 and 14500 Batteries

So, which battery size is better for your needs? It depends on the specific requirements of your electronic device. Here are some factors to consider when comparing the two battery sizes:


As mentioned earlier, the 18350 battery has a higher capacity than the 14500 battery. This means it can provide more power for a longer period of time. For example, an 18350 battery with a capacity of 1500mAh can power a flashlight on high mode for several hours, whereas a 14500 battery with a capacity of 800mAh may only last a couple of hours. However, keep in mind that capacity can vary between different brands and models of batteries.


Both the 18350 and 14500 batteries have a nominal voltage of 3.7 volts. However, the voltage can drop as the battery discharges, which can affect the performance of your device. In general, the 18350 battery can maintain a higher voltage for a longer period of time, which can result in better performance for high-powered devices.


Both the 18350 and 14500 batteries are rechargeable, but they can have different charging requirements. The 18350 battery typically requires a higher charging current than the 14500 battery, which means it can be charged faster. However, the 14500 battery may be more forgiving when it comes to charging, as it’s less likely to overheat or become damaged during the charging process.


The cost of 18350 and 14500 batteries can vary depending on the brand and capacity. Generally, the 18350 battery is more expensive than the 14500 battery due to its larger size and higher capacity. However, it’s worth noting that investing in a higher-quality battery can save you money in the long run, as it will last longer and provide better performance.


When it comes to lithium-ion batteries, safety is a top priority. Both the 18350 and 14500 batteries can be safe if used properly, but there are some potential risks to be aware of. Overcharging, overheating, and short-circuiting can all lead to battery failure and even fire or explosion. It’s important to follow the manufacturer’s guidelines for charging and using your battery, and to avoid using damaged or expired batteries.


The choice between the 18350 and 14500 battery depends on your specific needs and the requirements of your electronic device. If you need a lot of power and have space for a larger battery, the 18350 may be the better choice. If you need a smaller battery for a portable device, the 14500 may be a better fit. Consider the factors listed above to make an informed decision about which battery size to choose.

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