The purchase of laptop batteries directly affects the usage time and battery life of your computer.

When purchasing selected batteries, the following points should be noted:

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Laptop batteries are consumables, and as usage time increases, there will be a certain loss rate.

Since the batteries are generally made by connecting 3.7V 18650 cells in parallel (to form 10.8V), according to the characteristics of the series, that is, the barrel short board effect – the battery capacity depends on the minimum capacity of the battery. And the battery protection circuit has a limited balance of power. When one of the three series batteries in the series is reduced in capacity or the charging is not completely synchronized, the entire set of battery capacity is directly reduced, that is, the standby period.

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Therefore, the laptop battery can not be long-term loss of electricity, need to use half of the balance time in full of more than half an hour. Repeat once or twice every three months.

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To buy a battery, a large-capacity, small-capacity, longer-lasting product is more than just a surface digital multiplier, such as 5200mah/4400mah=1.2 times. In fact, the lifespan for buying a 5200mah is generally 1.5 to 2 times that of a 4400mah battery.

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There are many batteries on the market. Some factories produce batteries that use unqualified or inferior batteries. Their service life is generally 300 cycles (excellent batteries are more than 1000 times), and they are easily attenuated. The internal resistance increases, causing the battery pack to have an unbalanced capacity and charging. Use accelerated damage. Many of them can only be used for more than ten minutes in a matter of months. The batteries are generally unqualified. (If you buy such a point pool you can use the previous steps to buy a good battery replacement). When buying a battery, remember not to buy a battery that costs less than the price of a good battery.