There is also the definition of this capacity. I checked Baidu and they all decided to interrupt the discharge at 3.5v. However, this obviously capacity is not good. Is the capacity calculation from the cut-off power of 2.75v to the nominal capacity, or is it always placed at the nominal capacity of the capacity measured by 0v? If the battery cell is, there should be something wrong with your combination, because 5P is only 12A current, and the current in each section is uniformly 2.4A, and the temperature rise cannot be so large. The 18650 battery cell has a large charge and discharge current, which is far beyond the charge and discharge current of the lithium-ion battery of the mobile phone. Therefore, the battery maintenance board used for mobile phones is applied on the 18650 battery cell. If the charging current and discharge current are relatively small, for example, within 1000ma, it is still possible. However, if it is higher than this current, if it reaches 2a or higher, it will be appropriate locally and the maintenance board will be easily burned, resulting in the maintenance effect. 4.2v is the charging restriction voltage of lithium-ion batteries, and 3.7v is the discharge maintenance voltage. On the mobile phone, when the battery is discharged to 3.6-3.7v, the mobile phone will indicate that the battery is weak and it needs to be charged and turned off. The discharge and maintenance voltage of the battery maintenance board is individually between 2.75-3.0v. Household appliances consume very little power in standby time, so the discharge current is also very small, and there will be no heat generation in some cases. However, when household appliances are working, according to the principle of the concurrent circuit, the equivalent load resistance of its battery is small, and it is discharged at a high current during operation. When the battery discharges a local power, the internal resistance increases. However, the current required for household appliances to work cannot be reduced. Then, a considerable local energy is consumed on the internal resistance of the battery, causing the battery to heat up. At the same time, the discharge of some batteries accelerates, and the battery's utilization time will be shortened very quickly.
Heat persecution Edit
1. The battery's moderate heating period will increase the temperature of the internal parts and affect the deformed work of the components;
2. The battery's long-term heating period will increase the heat of the battery itself. If it is sealed (se or something is not sealed, it is directly installed in the battery), the battery will cause the internal air to expand violently, causing the battery to rise outside the battery, and the major will cause the battery;
3. The long-term moderate heating period of the battery will accelerate the aging process of the product itself and shorten its life;
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