Common battery types and sizes
Flat head means that the positive electrode of the battery is flat and has no protrusions. The battery cell used for spot welding of the battery pack is used. Generally, the same type of pointed head (can be used as a single battery power supply) is 0.5mm more in height. . By analogy, I will not explain them one by one. In addition, when there are many batteries, it is not the main models of "AAA, AA, A, SC, C, D, N, F", and there are often scores in front of "1/3, 2/3, 1/ 2, 2/3, 4/5, 5/4, 7/5", these scores represent the corresponding height of the cell body, for example, "2/3AA" means a rechargeable battery whose height is 2/3 of that of an ordinary AA battery ; Another example is "4/5A" which means a rechargeable battery whose height is 4/5 of that of an ordinary A battery.
Lithium-ion battery cell model and size
(1) Cylindrical lithium-ion battery cell: usually represented by five digits, the first two digits refer to the diameter of the cell body, and the last three digits refer to the height of the cell body. For example, 14500 refers to AA batteries, that is, about 14mm in diameter and 50mm in height . Common models: 14500, 14650, 17490, 18500, 18650, 26500.
Common BAK and Sanyo cylindrical battery specifications and models:
BAK 18650 2200mAh 3.7V, BAK 18650 2600mAh 3.7V, BAK 18650 2000mAh 3.6V ternary long life
Sanyo 18650 2100mAh 3.7V, Sanyo 18650 2500mAh 3.7V, Sanyo 18650 1500mAh 3.7V18650
(2) Square lithium-ion battery cell: usually represented by six-digit numbers, representing the thickness, width and height of the battery respectively, in millimeters, for example, 103450 is 10 (thickness) 34 (width) 50 (height) mm. If the thickness value is greater than the width value, the thickness should be 0.1, for example, 433861 is 4.3 (430.1)3861mm.
Common BAK and Sanyo square cell specifications and models:
BAK 523450A 1000mAh 3.7V, BAK 063450A 1200mAh 3.7V, BAK 633770A 2020mAh 3.7V
Sanyo UF103450P 1880mAh 3.7V, Sanyo UF653450R 1100mAh 3.7V 103450
