No. The premise is that the regular brand of regular manufacturers' products, the current charging treasure has automatic protection measures, and the power will be automatically cut off after the full charge.
At present, whether it is a mobile phone or a mobile power supply, the technology of the battery itself, or a charging scheme, has developed too much compared to previous years. In order to avoid overcharging the flashlight battery, a special IC chip is designed in the charging bank and charging head to control the charge and discharge. That is, the bank will automatically shut down before the charge drops to a level that could damage the phone's battery. When fully charged, the charger will automatically stop the power supply.
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In addition, it has overvoltage protection device, if your charging treasure in the charging treasure charging process broken, the output voltage is too high, this time the overvoltage protection of the charging treasure will also work, the same will automatically stop charging to protect itself.
Generally standard charging treasure, the first guarantee to charge to 99%, the use of trickle slow charge, no matter how long, there will be no damage to the charging treasure, when the trickle failure, the charging treasure battery has protection and automatic stop intake, and finally when the last necessity, there will be power failure, self-sealing protection, so unless it is the kind of cheap, nothing charging treasure, It might blow up.
Normally, it is good to be full, but it is OK to wash overnight, that is, it reduces the service life. However, the better power bank will automatically power off when it is full.