First, do you mark clear capacity. The battery that does not have a clear labeling capacity (such as 1000mAh or 1000 mAh) is likely to use inferior batteries or recycling batteries. Many cheap batteries that are filled with the market are made of recycling battery hearts. Although the price is cheap, the life span and unstable quality, accidental use may damage mobile phones.

　　Second, do you guarantee standby time. The standby time is the continuous use time of the battery after the battery is installed into the mobile phone. Generally, batteries sold on the market cannot guarantee the standby time for customers. This is because of the unstable battery quality. Many cheap batteries have a short standby time because they use poor quality battery hearts.

　　3. Whether to install a safe protection circuit board. Without a protective circuit board, lithium batteries are risk of deformation, leakage, and explosion. Under the competition of malignant price cutting, each household seeking a lower price protection circuit board, or a fundamental omitted the device, makes the market full of lithium batteries with explosive hazards. Consumers cannot distinguish whether there is a protective circuit board from the appearance, so it is best to choose a reputable merchant to buy

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