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What are the Advantages and Disadvantages of 18650 Batteries?

Oct. 22, 2020

As a 18650 3.7 v Battery Factory, share with you. The number 18650 in the lithium battery 18650 means the external size of the battery: 18 refers to the diameter of the battery, 65 refers to the height of the battery, and 0 refers to the cylindrical shape. The general 18650 battery is divided into lithium ion battery, lithium iron phosphate battery and nickel hydrogen battery. The capacity of NiMH batteries is generally 2500MAH, and the capacity of lithium batteries is generally 1200MAH-3100MAH.

Pansonic Battery

Pansonic Battery

Li-ion, LithiumIonBattery: Lithium batteries are widely used because of their light weight, large volume, and no memory. Many digital products use lithium batteries as switching power supplies, although their prices are relatively expensive. The specific energy of the rechargeable battery is very high, and its volume is twice the specific energy of the nickel-hydrogen rechargeable battery of the same net weight, and the life rate of the lithium battery is extremely low. In addition, lithium batteries basically do not have "memory" and do not have the advantages of toxic substances, which are the key reasons for their widespread use. In addition, the basic theory of the service life of the 18650 battery must be 1000 cycles of battery charging. In addition, because 18650 has excellent working reliability, it is widely used in various electronic device industries, such as: high-end glare flashlight, portable switching power supply, wireless network transmission data device, electric heating thermal underwear, shoes, Portable instrument equipment, portable lighting fixtures, portable copiers, industrial production equipment, medical equipment, etc.


1. The volume of a large 18650 lithium battery is generally between 1200mah and 3100Mah, while the general battery power is only about 800. If it is integrated with the 18650 lithium battery, the 18650 lithium battery can easily increase 5000Mah.

2. The 18650 type lithium battery has a long life, and the service life of all normal application cycle systems is more than 500 times, which is more than twice the cycle times of ordinary batteries.

3. High safety factor 18650 lithium battery, high safety factor, no explosion, no ignition; non-toxic, zero pollution, according to RoHS verification; various safety factors can be used with peace of mind, the cycle system frequency exceeds 500 times; heat resistance characteristics Good, the charging and discharging efficiency reaches 100% under the 65 degree standard. In order to better avoid the short-circuit failure of the rechargeable battery, the 18650 lithium battery has two levels of positive and negative electrodes. Therefore, the probability of short-circuit fault conditions has been minimized. A rain shield can be added to prevent the rechargeable battery from overcharging and losing power, and it can also extend the life of the rechargeable battery.

4. The working voltage of lithium 18650 high-voltage rechargeable batteries is generally acceptable, and is far higher than the working voltage of nickel-cadmium batteries and nickel-hydrogen rechargeable batteries.

5. There is no memory, no need to empty the remaining power before the battery is charged, which is convenient to use.

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