All you need to know about lithium battery 18650

08 Dec, 2022

By hqt

lithium battery 18650

What exactly is lithium battery 18650 for?

An improved rechargeable battery over other varieties is the lithium battery 18650, which offers several advantages. Compared to other battery types, it often weighs less, discharges more quickly, and has a higher capacity. Furthermore, because it can be recycled, it is more environmentally beneficial. These are superior to other batteries, including a longer lifespan and a better energy density.

The 18650 battery is a type of lithium-ion cell distinguished by its cylindrical size of 18 mm by 65 mm, which is also the usual size for AA batteries. Its average capacity ranges between 2,000 and 3,500 mAh. The first two numbers of the battery's model number (18650), which represent the minimum cell diameter and length, are whence the identifier "18650" originates. 

What are the benefits of using a lithium battery 18650?

18650 lithium batteries, a popular alternative for many electrical items, have several advantages over other battery types. Lithium battery 18650 is robust and long-lasting despite its small size and low weight. They are helpful and reasonably priced, and they can also be recharged.

  • Excellent safety performance: 

The 18650 Lithium Ion Battery has a 100% discharge efficiency at 65 degrees, is non-toxic and non-polluting and has been given the RoHS trademark certification. It also has excellent high-temperature performance. Additionally, it has excellent safety characteristics, doesn't burn or explode, and is non-toxic. The positive and negative electrodes of the 18650 lithium battery are separated to prevent fast battery connections. Thus, the possibility of a short-circuit phenomenon has been dramatically diminished. A protective board can be installed to prevent the battery from being overcharged and discharged, which can lengthen the battery's usable life.

  • Simple to install: 

These lithium-ion batteries have a capacity of 1800mAh or 2000mAh and can be used as drop-in rechargeable cells at 3.7V. These batteries have often been utilized in applications similar to flashlights. This is an excellent substitute for those of you who require a battery that is quick and simple to install and replace and has a lot of power. 

  • Large capacity and long life: 

An 18650 Lithium Battery's cycle life, which is more than twice as long as that of ordinary batteries, can reach more than 500 cycles under regular operation. The average lithium-ion battery capacity is just 800 mah, and the standard battery capacity ranges from 1200 to 3600 mah. However, if several 18650 lithium batteries are connected to form a battery pack, the capacity of the 18650 battery pack may easily exceed 5000 mah.

  • Combining a series connection with less resistance: 

These batteries can be used to create a variety of connections. Multiple units can be linked in parallel or in series to form a battery pack. It is finished to power large tools and equipment. All required is to place these cells next to or on top of one another. These cells have lower internal resistance than traditional liquid cells. Resistance levels lower than 35m are possible. Many devices, including smartphones, have longer standby times, and the battery pack's self-discharge rate is reduced. 

  • Zero memory effect: 

Another fantastic feature of these batteries is that they don't need to be fully discharged before recharging. Most consumers find that using these devices is much more convenient. Because there is no need to utilize all of the remaining power before charging, it is convenient to use.

  • There is hardly any internal resistance:

They have a lower internal resistance than regular liquid cells, although only slightly. The internal resistance of these batteries can even be less than 35m, which considerably reduces the battery's self-power consumption and lengthens the period a mobile phone can be used before needing to be recharged, allowing it to comply with international requirements completely. This lithium battery has the potential to replace Ni MH batteries and is a wonderful option for remote-control models because it supports high discharge currents. 

Safety measures and packaging for 18650 lithium batteries:

  • Combining batteries of various types, capacities, or brands is not advisable. Never use batteries that smell funny, are warming up, are distorted in any way, are discoloured, or are otherwise abnormal. Stop using the device as soon as you remove the battery from the charger if it is currently in use or charging.
  • The greatest voltage that can be used to charge batteries is 4.2V. When a lithium battery has been charged to 4.2V, it is commonly considered fully charged. 
  • During the charging process, the battery's voltage progressively rises from 3.7V to 4.2V. To avoid battery damage, charge the battery to a no-load voltage greater than 4.2V. This is the specific application for lithium batteries.
  • It is comparable to this idea since 18650 lithium ions are often bundled in steel in a liquid state similar to a cup of water. As a result, the 18650 can only be cylindrical. 
  • When buying a mobile power source, you may observe that it is thick and hefty. Those features are 18650 batteries. The explosion provides the greatest risk if the products produced are of insufficient quality because of the unique nature of the 18650 packaging.


An excellent battery is required for your gadget to function correctly. Lithium battery 18650 is the best option to power your devices with a reliable and cost-effective solution. Compared to other battery types, they frequently have a higher power density, making them perfect for use in various applications. Electric cars and laptops are only two examples of the many items that use them. JIEYO batteries satisfy most requirements for all applications. At competitive prices, we offer top-quality products. In addition to being easy to install, our batteries provide polite customer care. Buy one now to enjoy the great healthiness of this beautiful item. Put it in order now!