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[Chemical Knowledge]：What does battery AH mean? How to choose the right battery AH capacity?

Read： 658 Time：18months ago Source：Transform the World with Simplicity

When we buy batteries, we often see capacity units such as "5AH battery" and "12AH battery.

AH is called ampere-hour, or ampere-hour, which is a unit of measurement of battery capacity. In simple understanding, AH represents the magnitude of the stored "charge amount" of the battery. Just as the size of a glass of water is measured in milliliters, the size of a battery is measured in AH.

battery AH is closely related to the service life of the battery. The larger the AH of the battery, the longer it can be powered after being fully charged. Therefore, the AH value should meet your energy needs. For example, a 12V, 100AH battery, if you want to use it to support your home emergency lighting system, after fully charged, it can last for 8-10 hours, and higher-power devices, such as electric vehicle batteries, Can be powered for longer after charging.

At the same time, battery AH is also a key factor in determining battery efficiency and charging time. Generally speaking, the charging time should exceed 5% of the battery capacity to restore the normal chemical reaction of the battery. But do not tamper with devices such as chargers, so as not to cause the battery to be too saturated and damage the battery.

how to choose the right battery AH capacity? First of all, the demand must be clear. If you need to provide energy for small appliances, a 10AH battery is enough; if you want to power a mobile phone or laptop, you only need to choose a 5000mAh or smaller battery. In addition, considering the limitation of charging time, for small-sized devices with little demand, a small-capacity battery should be selected, and for larger devices, a large-capacity battery should be selected.

In short, battery AH is the unit of battery capacity, and its size determines the service life and efficiency of the battery. According to the needs to choose the appropriate battery AH capacity, in order to obtain the best battery efficiency in various situations.

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