12v 400ah lifepo4 battery pack.How long does it take to charge the phone battery for the first time?

　　There are many theories regarding the activation of mobile phone batteries: the first three charging times must exceed 12 hours in order to activate the battery. This statement is misled by previous nickel hydrogen batteries. Mobile phones have been activated and aged before leaving the factory, and users do not need to activate them during use, nor do they need to charge for an extended period of 12 hours. Charging according to the charging method described in the phone manual is the most standard.

　　In addition, lithium-ion batteries in mobile phones or chargers will automatically stop charging after the battery is fully charged, and there is no nickel battery charger that lasts for more than 10 hours of trickle charging. That is to say, if your lithium battery is fully charged and placed on the charger, it is also a white charge. And none of us can guarantee that the characteristics of the battery's charge and discharge protection circuit will never change and the quality will be foolproof, so your battery will be on the brink of danger for a long time. This is also another reason we oppose long-term charging.

　　The correct way to charge mobile phone batteries:

　　1. Charge according to the standard time and procedure, even the first three times;

　　2. When there is a low battery prompt on your phone, you should try to start charging as soon as possible;

　　3. Try to avoid charging before bedtime as it takes a long time and the voltage at night is unstable. In many places, the voltage at night is relatively high and fluctuates greatly, which has a significant impact on the battery. (Of course, in the case of good protection and control circuit quality of mobile phones and chargers themselves, there is still considerable guarantee for the protection of lithium batteries.)

　　4. The activation of lithium batteries does not require a special method, as they will naturally activate during normal use of the phone.

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