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Will charging the entire night damage the cell phone battery

Charging before bed is a guarantee for normal use of the phone during the day. If the phone is not fully charged, it seems that there is no sense of security when going out.

This question has two doubts: first, is it safe? Because many media reported that the overnight charging of mobile phones caused explosions, fires and other incidents; second, charging overnight, will it shorten the life of mobile phone batteries?

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Is it harmful to charge the phone all night?

Under normal circumstances, there is no harm in charging the phone overnight. Because, now mobile phones come with pMU, power management unit. When your phone is fully charged, the pMU will give a signal to power off, if you do not disconnect the power, it will enter the standby state.

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When the mobile phone's power is slightly consumed, the pMU will charge the mobile phone again, but this time the charging is using low current charging; this way the cycle charging is not harmful to the mobile phone battery, nor will it cause problems such as explosion and fire of the mobile phone. The overnight charge mentioned here is to use the original charger and battery of a regular manufacturer, or a trusted third-party charger. If you change it at will or purchase it at a roadside stall, the safety cannot be guaranteed.

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Will charging overnight reduce battery life?

Now mobile phones use lithium batteries, and the loss of battery life under normal circumstances is very slight when charging overnight.

Moreover, the mobile phone will automatically power off when it is fully charged, which will avoid overloading. So there is no need to worry that charging overnight will shorten the life of the battery, and you do n’t have to wake up in the middle of the night to unplug the charger, you can sleep peacefully.

Conditions that can shorten the battery life are: playing games while charging, making calls, watching TV, or performing other operations. In addition, the use of inferior chargers will also affect battery life.

When the mobile phone is used under heavy load, the mobile phone itself generates heat, and the heat generated by the battery during charging will cause the overall temperature of the mobile phone to rise, and high temperature is the biggest killer of lithium battery aging.

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