Find the difference between 18650 and 14500 lithium battery

Introduction Find the difference between 18650 lithium battery and 14500 18650 lithium battery

Find the difference between 18650 and 14500 lithium battery

18650 lithium battery 14500 lithium battery?

The 14500 battery is the same size as an AA battery, 14mm in diameter and 50mm in height

The 18650 battery is larger than an AA battery, 18mm in diameter. Height 65mm

14500 has small capacity, common is only 800 mah

18650 has large capacity, common can reach 2600 mah

Lithium battery (Li-ion, lithium-ion battery): lithium-ion batteries have the advantages of being light, large capacity and without memory effect. Therefore, 18650 lithium batteries are widely used. sources of energy, even if their prices are relatively expensive. The energy density of lithium-ion batteries is very high, their capacity is 1.5-2 times that of nickel-metal hydride batteries of the same weight, and their self-discharge rate is very low. In addition, lithium-ion batteries have virtually no “memory effect” and do not contain substances toxic, which is also an important reason for their widespread use.

There is a difference. The 14500 lithium battery is a lithium battery with a diameter of 14mm and a height of 50mm. AA batteries are the same size as 14,500 batteries, but are usually disposable batteries or nickel-metal hydride nickel-cadmium batteries.

The 14500 lithium battery is a lithium battery with a diameter of 14mm and a height of 50mm. According to the cell material, it is divided into lithium iron phosphate batteries and lithium cobalt oxide batteries. The voltage of the lithium cobalt oxide battery is 3.7V and the voltage of the lithium iron phosphate battery is 3.2V. The voltage can be adjusted to 3.0V via a battery voltage regulator lithium. Since its external dimensions are the same as 5# AA batteries, a 14500 lithium battery and a reserved bucket can be usedused in place of two AA batteries.

Compared with nickel-metal hydride rechargeable batteries, lithium batteries have the advantages of light weight, less self-discharge and higher discharge performance. They are therefore widely used by photography enthusiasts in digital cameras and electronic cigarettes. to replace rechargeable nickel-metal hydride batteries.

AA battery (i.e. AA, R6) is one of the types of batteries. Its general size is 14 mm in diameter and 50 mm in height. AA batteries are widely used in many small electrical appliances and digital products due to their small size and moderate capacity.

AA batteries sold in the market today include: nickel metal hydride rechargeable batteries, nickel cadmium rechargeable batteries, zinc manganese alkaline batteries (referred to as "alkaline batteries") ),ordinary zinc and manganese acid batteries (called as "ordinary" "Battery") etc. We can understand the basic performance of AA batteries by the letters on the battery, so we can decide which type of battery to use on which device.

Ordinary batteries

Ordinary batteries are zinc-manganese batteries, and the voltage of each battery is 1.5V. There are three main types of ordinary batteries: ① Normal mode, the marked model is Wei6 or R6S ② High capacity battery, the marked model is R6C; High power zinc type, the model number is R6P. The advantage of the R6P is its large capacity, close to that of alkaline batteries. There is a small group of AM3/UM3, called alkaline and carbon

Alkaline Battery

Alkaline battery logo model is LR6, unique. the battery voltage is 1.5V. It is characterized by large capacity, generally 2-6 times that of ordinary batteries, and it can be discharged at high current. It is suitable for electrical devices requiring large current, such as radio recorders and flashlights.

Rechargeable battery

The voltage of a single battery is 1.1 or 1.2 V. Nickel-cadmium batteries marked NICKEL-CADMlIUM on the battery are nickel-cadmium batteries marked NICKEL METAL HYDRIDE (or NI-MH). The rechargeable battery can be charged and discharged 500-1500 times and can be discharged with a large current. The internal resistance does not change much at the time of discharge, and the internal resistance does not increase sharply until the end of the discharge.

Ni-MH batteries have no memory and currently have a maximum capacity of 2700 mAh, so they are better than nickel-cadmium batteries. Their economy and excellent environmental performance will surely gradually replace alkaline batteries. .

Documentsreference

AA battery_Baidu Encyclopedia

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