What do the letters on the lithium battery mean?

The three letters "R, S and F" on the battery represent electromagnetic shapes. Batteries are usually marked with symbols such as R55 and R5, where R represents the size of the battery. According to IEC6 1960 standard, the logo of lithium-ion battery consists of three letters and several numbers.

1, battery capacity, battery capacity is determined by the number of active substances in the battery, usually expressed as mAh or Ah. For example, 1000 mAh can be discharged at a current of 1 A 1 h, which is converted into a charge of about 3600 C. ..

2. Charging termination voltage. When the rechargeable battery is fully charged, the active material on the electrode plate has reached a saturated state, and the battery voltage will not rise if it continues to be charged. The voltage at this time is called the charging termination voltage. The lithium-ion battery is 4.2 V or 4.35V v.

3. The discharge termination voltage refers to the lowest voltage allowed when the battery is discharged. The discharge termination voltage is related to the discharge rate. Generally speaking, the unit lithium ion battery is 2.7 V?

4. The initials indicate the negative electrode material of the battery, I: lithium ion battery, L: lithium metal electrode or lithium alloy electrode.

5. The second letter indicates the battery cathode material, C: cobalt-based electrode, N: nickel-based electrode, M: manganese-based electrode and V: vanadium-based electrode.

6. The third letter indicates the shape of the battery, R: cylindrical battery, P: square battery.

Extended data:

Nominal voltage The potential difference between the positive and negative electrodes of a battery is called the nominal voltage of the battery. The nominal voltage is determined by the electrode potential of the plate material and the concentration of the internal electrolyte. The discharge diagram of lithium is a parabola, from 4.3V to 3.7V and from 3.7V to 3.0V, both of which change rapidly.

Only about 3.7V has the longest discharge time, accounting for almost 3/4 of the time, so the nominal voltage of lithium battery refers to the voltage that maintains the longest discharge time. The nominal voltages of lithium batteries are 3.7V and 3.8V. If it is 3.7V, the charging end voltage is 4.2V If it is 3.8V, the charging end voltage is 4.35V.

The model of cylindrical battery is represented by 5 digits, which respectively represent the diameter and height of the battery. The first two digits represent the diameter and the last two digits represent the height. The unit of diameter is millimeter, and the unit of height is 0. 1 millimeter. When the diameter or height is greater than or equal to 100mm, a diagonal line should be added between the two dimensions.

The model of a square battery is represented by 6 digits, the first two digits represent the thickness of the battery, the middle two digits represent the width, and the last two digits represent the height in millimeters ... When any of the three dimensions is greater than or equal to 100mm, diagonal lines should be added between the dimensions; If any of the three dimensions is less than 1mm, the letter T should be added before the dimension, and the unit of the dimension is 0.1mm. ..

The model of button cell is represented by four digits, with the first two digits representing the diameter and the last two digits representing the height. The unit of diameter is mm, and the unit of height is 0.1mm.

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