Causes of not full and solutions:
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1, mobile phone battery aging, resulting in battery failure, can not be full. In this case, you can change the battery, preferably the original factory,
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2, the charger causes, such as the charger voltage or current is not enough, change the phone to adapt to the charger.
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3, the mobile phone power consumption is too large, set the software self-start function. Lower phone highlights, lower phone volume, exit unused software.
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4, install a Tencent mobile phone butler battery management function and so on to manage mobile phones.
This is not necessarily, to see how much V is the protection threshold of the protection board, but also to see how much charging current is, because the battery is with potential when the protection board is acting, the greater the charging current, the higher the battery potential, the greater the battery voltage will fall after the protection board protection, may be dissatisfied.
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On the contrary, the charging current of the small battery potential is not too large, and the voltage drop after the action of the protection board is not too large, and it may be overcharged.