While shopping for rechargeable batteries, you are sure to come across 18650 batteries. What are those, and what’s different about them?

Batteries that were once limited to the manufacturers are now at arm’s length for every consumer to use. But buying them is not simple as buying AA & AAA batteries. The potency of the 18650 lithium-ion rechargeable battery depends on the function you want them for, and you need to make sure you do not end up buying the fake ones.

What Is The 18650 Lithium-Ion Rechargeable Battery?

The number 18650 on the battery represents the dimension of the lithium-ion battery cell, I.e., 18mm × 65mm in size.

The 18650 has set some high standards among rechargeable batteries. From offering the best performance to being invulnerable to charging damage, the 18650 battery is a fantastic product.

It offers an output of 3.7 volts and a performance capacity from 1800mAh to 3500mAh (milliamp-hours). Its voltage range lies from 2.5 volts to 4.2 volts, and its charging voltage is 4.2 volts, and a nominal voltage of standard 18650 is 3.7 volts.

Basic Information about 18650 Lithium-Ion Rechargeable Battery

  • Types: Protected and Unprotected  

The protected ones come with an electronic circuit that is fixed in the battery casing. Its special casing saves the battery from overheating, over current and short circuits. We highly recommend using the protected ones as they are less likely to overheat and burst.

  • Size: 18.4mm (diameter) and 65mm (height) 
  • Voltage: 11.1v 
  • Capacity: from 1800mAh to 3500mAh 
  • Longevity: 12.5 watt-hours 
  • Cell Weight: 48g approx.

Applications of 18650 Lithium-Ion Rechargeable Battery 

18650 lithium-ion rechargeable batteries are used in several portable devices, including smartphones, laptops, flashlights, camera accessories, fitness gadgets, and even baby monitors and cars. Tesla is reported to use 7180 of 18650 batteries. They are also used in high lumen flashlights such as Thrunite TN14 or Fenix PD35.

From electronic items to laptops, there are built-in 18650s for a convenient recharging experience. You can also find these rechargeable batteries in modern smoking devices such as Vapes.

Advantages of 18650 Lithium-Ion Rechargeable Battery 

Even though lithium is an active metal, thanks to science and technology, the 18650 lithium-ion rechargeable battery has become increasingly popular due to its many benefits. Today, you can easily find lithium-ion batteries in a majority of equipment, offering the following benefits.

  • Big Capacity

18650 lithium-ion battery packs have the biggest capacity, between 12mAh to 3600mAh, which is more than twice the available battery capacity of only 800mAh. If a 18650 lithium-ion battery pack is formed by combining various lithium batteries in series and parallel to the battery pack, it will simply double the battery performance and capacity.

  • Superior Longevity 

One of the reasons for the remarkable superiority of the 18650 lithium-ion rechargeable battery is the long life of lithium batteries. Its service life for everyday use can reach more than 500 times. This longevity is double the lifespan of ordinary batteries.

  • High Security 

The widespread popularity of the 18650 battery is also because of its high safety with no worries of the explosion and sudden outbursts. They are non-toxic and environmentally friendly with a RoHS trademark certificate.

There are minimal chances of short circuits, and that too, only in extreme cases as the positive and negative electrodes are assembled apart. Reputable manufacturers such as BetterPower Battery & Co. take all sorts of safety measures to avoid overcharging. The user can also install a protection board to extend the service life.

  • High Voltage 

The 18650 lithium-ion rechargeable battery voltage is rated high, I.e., 3.6V, 3.8V, and 4.2V, compared to the 1.2V of nickel-cadmium and nickel-hydrogen batteries. This high voltage reduces the need to use more batteries, saving money.

  • Without Memory Effect 

A 18650 lithium-ion rechargeable battery does not require the user to empty the power in it before charging it again. This makes it highly user-friendly and convenient to use.

High Requirement on Producing the 18650 Lithium-Ion Batteries 

Compared to general battery production, 18650 lithium batteries require high production conditions. 18650 lithium battery production is required to have a protection line to prevent the battery from being overcharged and leading to discharge. Because the material used in lithium batteries is basically lithium cobaltate material, and lithium cobaltate material cannot be discharged at high current.

Beware of fake products as this not only results in loss of precious money but is also potentially dangerous for you and the people around you. Buy from highly reputable sellers only, such as BPI.

Choose BPI for Your Lithium-Ion Battery Needs

BetterPower Battery (BPI) has more than ten years of experience in batteries productions and research. We implement advanced and safe technology and protocols employing Lithium-Ion and Lithium-polymer chemistry to develop a safe and high-performance battery system. BPI offers the best quality, whether you need a 18650 battery pack or other kinds of batteries.