18650 vs 14500 Battery, Comprehensive Comparison in Details

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When it comes to portable electronics and devices, batteries play a vital role in providing the necessary power. Two popular options in the market are the 18650 and 14500 batteries. In this comprehensive comparison, we will delve into their size, capacity, voltage, and applications to help you make an informed decision based on your specific needs.

18650 vs 14500 Battery, Comprehensive Comparison in Details

What is 18650 battery?

An 18650 battery, also known as an 18650 cell, is a rechargeable lithium-ion battery commonly found in electronic devices. Measuring 18 mm (0.71 in) in diameter and 65 mm (2.56 in) in length, the name ‘18650’ denotes its dimensions. Key points about 18650 batteries include:

  1. Chemistry and Composition: Primarily lithium-based, consisting of an anode (usually graphite) and a cathode (often lithium-metal oxide). Some variants include sodium-ion cells in the same cylindrical form factor.
  2. Applications: Widely used in various devices such as laptop batteries, cordless power tools, electric vehicles, e-bikes, and more.
  3. Voltage: Typically operates at a nominal voltage of 3.6-3.7 V.
  4. Origin: Originally developed by Panasonic in 1994 to address the demand for compact, lightweight batteries with extended usage times.

In summary, 18650 batteries offer versatility and reliability, making them a popular choice for a wide range of electronic applications.

What is 18650 battery?

18650 batteries are known for their high energy density, which means they can store a large amount of energy in a small space. They are also known for their long lifespan and durability, making them a popular choice for use in high-performance devices. Additionally, many 18650 batteries are rechargeable, allowing users to save money and reduce waste by reusing them instead of disposing of them after use.

What is 14500 battery?

A 14500 battery is a cylindrical lithium-ion cell, distinguished by its dimensions: approximately 49.2 mm in length and 13.5 mm in diameter. Serving as the rechargeable counterpart to AA batteries, 14500 cells offer several key details worth noting:

  1. Voltage: Most 14500 batteries operate at a voltage of 3.6V to 3.7V, providing ample power for various applications.
  2. Chemistry: These batteries typically utilize LiCoO2 (lithium cobalt oxide) chemistry, ensuring efficient energy storage and delivery.
  3. Applications: Widely employed in flashlights, 14500 batteries serve as economical and eco-friendly alternatives to disposable AA batteries in compatible devices.
  4. Compatibility: While sharing similar dimensions with AA batteries, 14500 batteries boast distinctly higher voltages due to their lithium-ion chemistry. It’s crucial to consult your device’s manual to confirm compatibility before substituting AA batteries with 14500 counterparts.

Remember to verify compatibility with your device’s manual before transitioning to 14500 batteries!

What is 14500 battery?

Like other lithium-ion batteries, 14500 batteries are known for their high energy density and long lifespan. They are also rechargeable, which means they can be used multiple times and are more environmentally friendly than disposable batteries. However, because of their smaller size, 14500 batteries typically have a lower capacity and lower discharge rate than larger lithium-ion batteries such as the 18650 battery.

18650 vs 14500 battery, which is better?

Comparing 18650 and 14500 batteries shows differences tailored to specific needs. 18650 batteries are larger and have higher capacity, great for laptops and electric vehicles. 14500 batteries are smaller, ideal for toys and compact devices. Both have different voltages and applications, so choose based on your device’s size and power needs. Let’s break down their differences:

  1. Dimension:
    • 18650 Battery: Larger at 18mm by 65mm with capacities ranging from 1200mAh to 3600mAh.
    • 14500 Battery: Smaller at 14mm by 50mm with capacities of 500mAh to 800mAh.
  2. Performance:
    • 18650 Battery: Superior due to larger size and higher capacity, ideal for demanding devices like laptops, drones, and power tools.
    • 14500 Battery: Offers unique benefits for compact devices such as toys and small digital cameras.
  3. Voltage:
    • 18650 Battery: Operates at 3.6V to 3.7V.
    • 14500 Battery: Nominal voltage of 3.2V.
  4. Applications:
    • 18650 Batteries: Used in electric vehicles, flashlights, and laptops among others.
    • 14500 Batteries: Perfect for space-limited devices where compact size is essential.

In summary, while the 18650 battery excels in capacity and performance, the 14500 battery offers versatility for smaller devices. Understanding these differences helps choose the ideal battery for your specific needs.

18650 vs 14500 battery, which is better?


Overall, the 18650 is a larger battery that typically has a higher capacity and is capable of delivering higher currents, while the 14500 is a smaller battery that is suitable for applications that require less power.

What should I check before buying a 14500 or 18650 battery?

Before buying a 14500 or 18650 battery, check your device’s compatibility, capacity, voltage, discharge rate, brand reputation, and price. Ensure your device supports the battery type, and consider the battery’s power, safety, and cost for optimal performance and longevity.

  1. Device Compatibility: Verify if your device is compatible with either a 14500 or 18650 battery. Some devices may only support one type, so confirming compatibility is essential.
  2. Capacity: Evaluate the battery’s capacity, indicating its energy storage capability. Generally, 18650 batteries offer higher capacities than 14500 batteries, providing longer run times for devices with higher power demands.
  3. Voltage Requirements: Check your device’s voltage requirements to match with the battery’s output. While 18650 batteries typically have higher voltages than 14500 batteries, ensuring compatibility is crucial for optimal performance.
  4. Discharge Rate: Assess the battery’s discharge rate, indicating how quickly it can deliver power. Higher discharge rates, often found in 18650 batteries, are beneficial for devices requiring rapid power delivery.
  5. Brand Reputation and Quality: Prioritize reputable brands and high-quality batteries to ensure safety, reliability, and longevity. Opting for trusted brands minimizes the risk of purchasing inferior batteries that may pose safety hazards or perform poorly.
  6. Price Comparison: Compare prices across different brands and battery types while considering factors like capacity, voltage, and quality. Although high-quality batteries may have a higher upfront cost, they often offer better performance and durability, resulting in long-term cost savings.

By considering these factors before making your purchase, you can confidently select the right 14500 or 18650 battery that meets your device’s requirements and offers optimal performance and longevity.

What should I check before buying a 14500 or 18650 battery?

How do 18650 batteries and 14500 batteries work?

18650 and 14500 batteries are rechargeable lithium-ion cells that store energy by moving lithium ions between electrodes during charging and discharging. Both have built-in safety features. 18650 batteries are larger with higher capacity for devices like laptops, while 14500 batteries are smaller and used in portable tools and flashlights.

Both 18650 and 14500 batteries are rechargeable lithium-ion cells that operate on similar principles. Inside these batteries, lithium ions shuttle between the cathode and anode through an electrolyte during charging and discharging cycles. This process stores and releases energy, powering various devices.

Additionally, both battery types incorporate protection circuits to prevent overcharging, over-discharging, and short circuits, ensuring safe and reliable operation. However, they differ in size, capacity, and other characteristics tailored to specific applications.

While 18650 batteries are larger and typically offer higher capacities, suitable for devices like laptops and electric vehicles, 14500 batteries are smaller and find use in portable tools, e-cigarettes, and flashlights.

Understanding these fundamental workings and differences can guide users in selecting the appropriate battery type for their specific needs, whether it’s longevity, portability, or power output.

How do 18650 batteries and 14500 batteries work?


Can I charge 14500 battery with AA charger?

No, it’s not advisable. While both 14500 and AA batteries share similar sizes, their voltages and chemistries differ significantly. AA batteries typically operate at 1.5 volts, while 14500 lithium-ion batteries have a voltage of 3.7 volts, more than double that of AA batteries. Using an AA charger to charge a 14500 battery can lead to overcharging, damaging the battery and posing safety risks. It’s crucial to use a charger specifically designed for 14500 batteries to ensure safe and effective charging.

Where to Source Wholesale 18650 or 14500 battery Batteries?

Looking for wholesale 18650 or 14500 lithium batteries? Redway Power, a trusted lithium batteries factory, specializes in providing authentic, high-quality lithium-ion batteries with fast shipping and expert customer service. Whether you need bulk orders or customized solutions, Liion Wholesale has you covered. Contact us today for a quick quote and reliable battery sourcing. If you wannt to do the customized 18650 or 14500 lithium batteries, please contact with us to get a quick quote.


Is a 14500 battery the same size as a 18650? No, the 14500 battery is smaller than the 18650 battery. The 14500 measures approximately 14mm by 50mm, while the 18650 measures approximately 18mm by 65mm.

What battery is equivalent to a 14500? In terms of size, the 14500 battery is equivalent to a AA alkaline battery, both measuring about 14mm by 50mm.

What is a 18650 battery equivalent to? In terms of voltage, the equivalent of one 18650 battery would be approximately 2.5 AA batteries connected end to end.

What is the maximum mAh for a 14500 battery? The maximum mAh for a 14500 battery is around 1115 mAh, with a rated capacity of 1100 mAh.

What is the maximum mAh for a 18650 battery? 18650 batteries generally have capacity ratings ranging from 2,300 to 3,600 mAh.

What has a higher capacity than the 18650 battery? Battery cells such as 21700, 26650, and 32120 surpass the current carrying capacity of the 18650 battery, offering greater capacity and current carrying capability.

What is so special about 18650 battery? 18650 batteries are highly versatile and widely used due to their superior capacity, discharge rates, and compact size. They are commonly found in various devices like flashlights, laptops, and electric vehicles.

Is a 14500 battery the same as AA? No, while 14500 and AA batteries share similar dimensions, they have different voltages and chemistries. 14500 batteries typically have a voltage of 3.7V, while AA batteries usually have 1.5V.

What is better than 18650 battery? Battery cells like the 21700 offer higher capacity and energy density compared to the 18650, making them preferable for certain applications requiring more power and longer runtime.

How big is a 14500 battery? The dimensions of a 14500 battery are approximately 14mm in diameter and 50mm in height.

Can I use a 18650 instead of AA? No, 18650 batteries cannot directly replace AA batteries due to the significant difference in voltage. 18650 batteries typically have 3.7 volts, while AA batteries have 1.5 volts.

What is a 14500 lithium battery? A 14500 lithium battery is a rechargeable lithium-ion battery commonly used in LED torches and other devices. It typically has a voltage of 3.7V.

Is 18650 battery same as 3.7 V? The nominal voltage of a 18650 battery is indeed around 3.7V, but it can vary slightly depending on the specific chemistry and manufacturer.

What are the two types of 18650 batteries? The two main categories of 18650 batteries are protected and unprotected. Protected batteries include a charge and discharge protection circuit, while unprotected ones do not.

Are 18650 batteries double AA? No, 18650 batteries are not the same as AA batteries. They are slightly larger and have different chemical compositions, often used in high-drain devices due to their superior capacity and discharge rates.

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