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What does lithium battery manufacturer mean by analyzing the AH of batteries? AH: The amount of charge that a lithium battery can hold is the "capacity" of the battery, characterized by "ampere hours" and represented by the symbol "Ah". The ampere hour represents the size of the battery capacity. The rated capacity of a battery refers to 25 ℃, and it is discharged at a constant current for 20 hours until the termination voltage. 20 times this current is the capacity of the battery.

What does lithium battery manufacturer mean by analyzing the AH of batteries?

Usually, we talk about the capacity of lithium batteries in ampere hours AH, which is based on a specific battery that has already been determined by the lithium battery manufacturer.

For example, what is the battery capacity of this mobile phone; The capacity of this electric vehicle battery is determined by different batteries. The battery voltage has been determined without considering the actual voltage, and simply stating ampere hours can represent the capacity of this battery.

However, for batteries with different voltages, we cannot simply use ampere hours to represent capacity. For example, a 12V20AH battery, a 15V20AH battery, even if they are both 20AH, can supply the same power load, and the equipment can work normally, but the duration is different. Therefore, the standard capacity should be measured in power.

For example, if the capacity of a polymer lithium battery is 1000mAh, the charging and discharging current is 1000mA. When the maximum voltage of the battery is 4.2V and it is placed at 3.0V, the released capacity is the most true capacity of the battery.

For example: 120Ah. Indicates the current magnitude during discharge. Our national standard specifies a 20 hour discharge rate for lithium batteries. For a 120Ah battery, it can be discharged for 20 hours with a current of 6A.

Generally, Ah is used to represent the rated capacity of the battery, and Cn is used to represent it. N refers to the discharge rate for a few hours, here it is 20. Some batteries are calculated based on a 10 hour discharge rate, represented by C10.

Simply put, the ampere hour of a lithium battery represents its capacity, and the larger the ampere hour number, the larger the battery capacity, the more energy it can store, and the longer its battery life. In general, if funds and space permit, priority should be given to batteries with higher ampere hours.

In addition, the ampere hour also represents the discharge capacity. Lithium batteries with high ampere hours can provide a large safe discharge current, which can be used by high-power equipment, otherwise it will be small.

The development of lithium battery technology is rapid, and the price is gradually affordable. With the support of national policies, more and more people are choosing lithium batteries for battery applications. The ampere hour (Ah) of a battery is the current in amperes multiplied by the time in hours.

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