18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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source:Industry News release time:2024-09-26 Hits:     Popular:AG11 battery

  18650 Lithium Battery Specification

  18650 lithium battery is a standardized specification for lithium-ion batteries, with specific dimensions and performance parameters:

  1. Size Standard: The "18" in 18650 refers to the diameter of the battery being 18.0mm, and the "65" indicates the height of the battery being 65.0mm. The size allows for an error of ± 0.02mm. This standardized size makes 18650 lithium batteries highly versatile and interchangeable in production, assembly, and use, facilitating the production and application of batteries. At the same time, its cylindrical shape design also makes the battery more convenient to install and fix, suitable for various devices and application scenarios.

  2. Voltage Characteristics: The nominal voltage of 18650 lithium batteries is generally 3.6V or 3.7V, the charging voltage is 4.2V, and the minimum discharge termination voltage is usually 2.75V. Below this voltage, it can easily lead to a serious decrease in battery capacity or even scrap. In practical use, the voltage of 18650 lithium batteries gradually decreases with changes in battery capacity. When the battery is fully charged, the voltage approaches 4.2V, and when the battery is depleted, the voltage drops to around 2.75V. This voltage characteristic determines that 18650 lithium batteries need to be equipped with corresponding voltage management circuits during use to ensure the normal use and safety of the battery.

  3. Capacity Range: The capacity range of 18650 lithium batteries is relatively wide, with common capacities ranging from 1500mAh to 3100mAh. Some brands of batteries may have higher capacities, but there are also some cases of falsely labeled capacities in the market. For example, some low-quality 18650 lithium batteries may have a nominal capacity that is too high, but in actual use they cannot reach the nominal value. Therefore, when choosing 18650 lithium batteries, it is necessary to choose reputable brands and reliable products to ensure that the battery's capacity and performance meet the requirements.

  4. Battery Types: Common 18650 lithium batteries are divided into two types: lithium-ion batteries and lithium iron phosphate batteries. Lithium ion batteries have high energy density and good charging and discharging performance, but they are relatively expensive; Lithium iron phosphate batteries have higher safety and longer cycle life, and are relatively inexpensive. Different types of 18650 lithium batteries are suitable for different application scenarios, and users can choose the appropriate battery type according to their own needs.

  5. Wide application fields: Due to its high performance and reliability, 18650 lithium batteries are widely used in various electronic devices and power tools, such as laptops, flashlights, electric bicycles, electronic cigarettes, etc. In these application scenarios, 18650 lithium batteries can provide stable power support for devices and meet users' usage needs.


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