What does the code on the lithium battery mean?
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- Carol
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- Sep 19,2020
Summary
What does the code on the lithium battery mean?
What does the code on the lithium battery mean?
【Summary】:
Generally, the following codes are sprayed on lithium battery cells
1: Material identification code
Is usually in the jetty of the battery, such as ICR, IMR, NCR, IFR, LTO, etc. So what do these coding mean? ICR: The cathode material uses lithium cobalt oxide. IMR: The cathode material uses lithium manganate. NCR: The cathode material uses lithium nickel cobalt manganese oxide (commonly known as ternary). IFR: The cathode material uses lithium iron phosphate. LTO: Lithium titanate is used as the cathode material. Based on these, we can understand what the cathode material of lithium batteries is, and avoid being fooled by businesses and selling dog meat.
2: Specification type number
The specifications and models here generally refer to the size of lithium batteries such as: 18650 (18/65), 18490 (18/49), 21700 (21/70), 26650 (26/65), 32650 (32/65), etc. The first two digits represent the battery diameter, the last two digits represent the length (some people like to call it height), and 0 represents a cylinder. For example, 18650 refers to a cylindrical battery with a diameter of 18MM and a length of 65MM. The power type will also add the maximum discharge power after the model code, such as 18650/3C, 18650/5C, etc., which means that the maximum discharge current can reach the rate of its own capacity. 3C refers to 3 times, such as 3C rate of 1500mAH. The discharge current can reach 4.5A.
18650 common logo
3: Capacity and voltage coding
The capacity and power will be marked on the battery, such as: 1800mAh, 2000mAh, 2200mAh, 2400mAh, 2500mAh, 2600mAh, etc. common to 18650 batteries, these are the battery capacities, and some manufacturers will spray the power corresponding capacity on the battery, such as The power of 1800mAh of 3.7V 18650 battery is 6.6wh. Some unscrupulous merchants on Taobao make use of their customers' lack of knowledge of batteries and deliberately sell power as capacity, such as 4,000mwh 18650 battery, 6000mwh 18650 battery, or even 9000mwh 18650 battery. In fact, to convert, a 3.7V 18650 battery uses mwh÷3.7V=mAh. The actual capacity of 4000mwh of 18650 is 1081mah. Everyone must keep their eyes open when buying batteries and don't be fooled by unscrupulous merchants.
The voltage code refers to the voltage of a single battery. Different materials have different positive electrode voltages, such as lithium manganese oxide (3.6V IMR), lithium cobalt oxide (3.7V/3.8V ICR), and lithium nickel cobalt manganese oxide (commonly known as ternary, 3.6V NCR). ), lithium iron phosphate (3.2V IFR), lithium titanate (2.3V/2.4V LTO). Some manufacturers mark the full-charge voltage, and some manufacturers mark the rated voltage. Different manufacturers have different voltage marking methods.
4: Production batch code
The production batch code of each manufacturer is different. The approximate content is the year and month of production. Knowing the batch code of the manufacturer can tell when the battery was produced. You will not get old batteries.
5: Manufacturer brand identity
Many manufacturers will mark the manufacturer on the battery, with the manufacturer's LOGO and brand words. Each manufacturer's coding is different, so the manufacturer's logo is also different.