Most people use their mobile phone during day time, and when they go to sleep they plug in the phone to charge. But the phone may only take a few hours (more likely less than 3 hours) to charge. But when they are asleep and no one’s there to remove the phone from the charger at that time, the phone is still plugged into the charger for hours, even after a full charge. But is it ok to leave the phone like this?
Well, modern smartphones are smart enough to stop the charging of the battery through detecting that the battery has reached 100%, through its microchips. But in the past, it was not a good idea to leave the older mobile phones ( not the smartphone generation) in the charger for a long time after the charging is completed. This caused the battery to become bulged. So in smartphones, are there any disadvantages of leaving the phone on the charger after its fully charged?
If you consider the electricity bill, there may be a disadvantage. Keeping a charger plugged in unnecessary may increase electricity bill unnecessarily. This may be a very little effect on the electricity bill but the authorities of some countries inform that the electricity bill can be reduced by plugging the chargers out when the task is done. But some tests have proven that this would be a matter of just cents. Check here for more details. If there are such doubts, you can use a charger with a timer. So once the charging is done in about 2 or 3 hours, the charger will turn off itself rather than consuming electricity for 3 or 4 hours more.
One more thing is that charging may cause the phone battery to heat a little bit in some phones. So it is suggested that if the phone is plugged into the charger, make sure that it’s properly ventilated ( not covered in any way). If the phone is covered in some way, it may get more heated. This may cause serious accidents and device damage. The batteries may get bulged due to the reason.