What is the difference between 18650 and 26650 batteries?

Introduction What is the difference between 18650 and 26650 batteries? The differences between 18650 and 26650 batteries are: 1. The rated capacity is different: IFR26650 rated capacity 30.

What is the difference between 18650 and 26650 batteries?

The differences between 18650 and 26650 batteries are:

1. The rated capacity is different: the rated capacity of IFR26650 is 3000 mAh and the rated capacity of IFR18650 is 1100-1400 mAh.

2. The diameters of the two batteries are different: the diameter of IFR26650 is 26mm and the diameter of IFR18650 is 18mm.

3. The reference masses are different: the production quality of IFR26650 is 94 grams and the production quality of IFR18650 is 45 grams.

4. The volume of 26650 is larger than that of 18650 Large, their cell heights are the same, but their cell diameters are different. The diameter of 26650 cells is 26mm, while the diameter of 18650 cells is 18mm.

5. Battery capacity is different; under the same battery material, the capacity of 26650 battery is higher than that of 18650. Assuming the same ternary materialWhen used, the 26650 battery is usually around 5200 mAh, while the capacity of the 18650 battery is mainly around 2600 mAh.

6. Application environments are different: 18650 lithium batteries are widely used in lighting lamp batteries, industrial support lithium batteries, power tool batteries, electric bicycle batteries, lithium batteries power, etc. lithium batteries are used in There are many integrated lithium batteries for solar street lights, energy storage stations, solar energy storage batteries, etc.

Detailed information:

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Lithium battery (Li-ion, LithiumIonBattery): the lithium-ion battery has the characteristics of light weight. , large capacity, Due toe its advantages such as the absence of memory effect, it has been widely used - many digital devices use lithium-ion batteries as power sources, although they are relatively expensive.

Lithium-ion batteries have a high energy density, their capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight, and they have a very low self-discharge rate. In addition, lithium-ion batteries have practically no “memory effect” and do not contain toxic substances, which is also an important reason for their widespread use.

In addition, please note that the exterior of lithium batteries is usually marked with 4.2 Vlithiumionbattery (lithium battery) or 4.2 Vlithiumsecondarybattery (lithium secondary battery) or 4.2 Vlithiumionrechargeablebattery ( rechargeable lithium battery) in English, so users should read it when purchasinghat of batteries. Check the markings on the battery pack to avoid confusing nickel-cadmium and nickel-hydrogen batteries with lithium batteries because you cannot clearly see the battery type.

References:

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18650 lithium battery-Baidu Encyclopedia

References:

26650 Lithium Battery - Baidu Encyclopedia

Lithium battery specifications, size standards and parameters

The details are as follows:

18650 is a lithium ion battery, which is a standard lithium ion battery model, where 18 means the diameter is 18mm, 65 means the length is 65mm, 0 means cylindrical battery.

Common 18650 batteries are divided into lithium ion batteries and lithium fe batteriesr phosphate. The voltage of lithium ion battery is 3.6V and 4.2V, the voltage of lithium iron phosphate battery is 3.2V, the capacity is generally 1200mAh to 3000mAh, the Common capacity is 2200 mAh to 3600 mAh.

How to buy lithium batteries

1. Is the capacity clearly marked? Batteries without clearly marked capacity (such as 1000 mAh or 1000 mAh) are most likely using lower quality batteries or recycled batteries. Many inexpensive batteries on the market are made from recycled batteries. Although they are cheap, their lifespan is short and their unstable quality can damage the phone.

2. Is there guaranteed standby time? Standby time is the duration of continuous use from the time the battery is installed in the phone until the next charge. Generally, batteries sold on the market cannotwind not guarantee standby time to customers. This is because the battery quality is unstable. Many cheap batteries use poor quality battery cores, so the standby time is very short.

Lithium battery model size comparison table

Lithium battery specifications and sizes are standard batteries 0440, 14500, 16340, 18650, 21700, 26650, etc. ., detailed explanation of parameters as follows:

1. 10440 Battery: The 10440 battery is a lithium battery with a diameter of 10mm and a height of 44mm.

2. 14500 Battery: The 14500 battery is a lithium battery with a diameter of 14mm and a height of 50mm.

3. 16340 Battery: The 16340 battery is a lithium battery with a diameter of 16mm and a height of 34mm.

4. 18650 battery: The 18650 battery is a lithium battery with a diameter of 18 mm and a height of 65 mm.

5. 21700 Battery: The 21700 battery is a lithium battery with a diameter of 21mm and a height of 70mm.

6. 26650 Battery: The 26650 battery is a lithium battery with a diameter of 26mm and a height of 65mm, with a rated voltage of 3.2 volts and a rated capacity of 3200 mAh.

7. The capacity of the 18650 lithium-ion battery ranges from 1000 mAh to 3000 mAh, but the technology is generally between 1800 mAh and 2600 mAh. If the capacity of the 18650 lithium-ion battery is too high, the cost will increase significantly. In addition, the 18650 lithium-ion battery with too high capacity in non-special areas is not of great importance.

There are many types of lithium batteries, such as 10440 battery, 14500 battery, 16340 battery, 18650 battery, 21700 battery, 26650 battery, etc. .

1. 10440 battery: The 10440 battery is a one-d lithium batterydiameter of 10 mm and a height of 44 mm.

2. 14500 battery: The 14500 battery is a lithium battery with a diameter of 14mm and a height of 50mm.

3. 16340 Battery: The 16340 battery is a lithium battery with a diameter of 16mm and a height of 34mm.

4. 18650 Battery: The 18650 battery is a lithium battery with a diameter of 18mm and a height of 65mm.

5. 21700 Battery: The 21700 battery is a lithium battery with a diameter of 21mm and a height of 70mm.

6. 26650 Battery: The 26650 battery is a lithium battery with a diameter of 26mm and a height of 65mm, with a rated voltage of 3.2V and a rated capacity of 3200mAh.

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