What are the lithium-ion battery cell models and specifications?
How many types and specifications of the battery? To put it in the end, there are several, in fact, it is unclear, because each battery manufacturer has its own model and specifications, and there are some customized battery specifications and so on. The following introduces the naming of the lithium battery model specifications and the meaning of the letters and numbers on the battery, so that everyone has a better understanding of the battery model specifications.
Cylindrical lithium battery model specifications
The model name of cylindrical lithium battery consists of three letters and five digits. IEC61960 stipulates the rules for cylindrical and square batteries as follows:
Cylindrical lithium battery, 3 letters followed by 5 numbers. 3 letters, I means there is built-in lithium ion, L means lithium metal or lithium alloy electrode. The second letter represents the cathode material, C represents diamond, N represents nickel, M represents manganese, and V represents vanadium. The third letter is R for cylindrical shape.
There are 5 digits, the first 2 digits indicate the diameter, the last 3 digits indicate the height, and the unit is mm.
For example, ICR18650 is a general-purpose 18650 cylindrical battery with a diameter of 18mm and a height of 65mm, and 0 means a round shape.
3.6V is the indicator and the voltage is 3.6V.
C is the discharge rate when the battery is discharged, the unit is mAh, in layman's terms, it is the discharge size or speed per unit time. For example, when the battery capacity used is discharged after 1h, it is called 1C discharge; when the battery is discharged after 5h, it is called 0.2C discharge.
Cylindrical lithium battery model table:
| model | Nominal voltage (V） | Nominal capacity (mAh） | Diameter (mm) | Height (mm) | Application |
| 14500 | 3.7 | 800 | 14 | 50 | Instrumentation, consumer electronics |
| 18650 | 3.7 | 2000-3500 | 18±0.2 | 65±2.0 | Special equipment, medical equipment, robots |
| 18500 | 3.6 | 800-1500 | 18±0.2 | 50±0.2 | Security communications, rail transit |
| 26650 | 3.2 | 3200~3500 | 26.2 | 65.6 | Power/energy storage field, robots, emergency backup |
| 21700 | 3.6 | 3000-4800 | 21 | 70 | Digital equipment, electric tools |
| 32650(32700) | 3.2 | 4500-6500 | 32.4±0.3 | 70.5±0.2 | Instrumentation, backup power supply, special equipment field |
Square lithium battery model specifications
The model name of the square battery: 6 numbers indicate the thickness, width and height of the battery, in millimeters. When any one of the three dimensions is greater than or equal to 100mm, a diagonal line should be added between the dimensions; if any of the three dimensions is less than 1mm, the letter t” shall be added in front of this dimension, and the unit of this dimension is one tenth of a millimeter.
ICP103450 represents a square secondary lithium-ion battery. The positive electrode material is a diamond with a thickness of about 10mm, a width of about 34mm, and a height of about 50mm.
ICPO8/34/150 represents a square secondary lithium-ion battery, the cathode material is drilled, its thickness is about 8mm, the width is about 34mm, and the height is about 150mm.
ICPt73448 represents a square secondary lithium-ion battery. The positive electrode material is a diamond with a thickness of about 0.7mm, a width of about 34mm, and a height of about 48mm.
Square lithium battery model table:
|
model |
size |
Nominal capacity (mAh)
|
Internal resistance（mΩ） |
standard（V） |
||
|
thickness (±0.3mm) |
width (±0.3mm) |
high (±0.5mm) |
||||
|
3578131 |
3.5 |
78 |
131 |
4000 |
＜40 |
3.7 |
|
3463110 |
3.4 |
63 |
110 |
2700 |
＜40 |
3.7 |
|
3845120 |
3.8 |
45 |
120 |
2200 |
＜40 |
3.7 |
|
366090 |
3.6 |
60 |
90 |
2000 |
＜40 |
3.7 |
|
3435165 |
3.4 |
35 |
165 |
1800 |
＜40 |
3.7 |
|
2453135 |
2.4 |
53 |
132 |
1400 |
＜40 |
3.7 |
|
385085 |
3.8 |
50 |
85 |
1300 |
＜60 |
3.7 |
|
344461 |
3.4 |
44 |
61 |
1200 |
＜60 |
3.7 |
|
255480 |
2.5 |
52 |
80 |
1150 |
＜50 |
3.7 |
|
393278 |
3.9 |
32 |
78 |
1100 |
＜65 |
3.7 |
|
305060 |
3 |
50 |
60 |
900 |
＜40 |
3.7 |
|
383450 |
3.8 |
34 |
50 |
600 |
<70 |
3.7 |
|
383450 |
3.8 |
34 |
50 |
450 |
＜80 |
3.7 |
|
233759 |
2.4 |
37 |
59 |
380 |
＜80 |
3.7 |
|
392339 |
3.9 |
23 |
39 |
330 |
＜80 |
3.7 |
|
302441 |
2.8 |
24 |
40.5 |
250 |
<100 |
3.7 |
|
251776 |
2.5 |
17 |
76 |
230 |
＜120 |
3.7 |
|
302145 |
3 |
21 |
45 |
210 |
＜150 |
3.7 |
|
222530 |
2.5 |
25 |
30 |
120 |
＜180 |
3.7 |
|
321239 |
3.1 |
12 |
39 |
100 |
＜200 |
3.7 |
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