Is it okay to leave a Laptop or SmartPhone plugged overnight?
Well, this is very normal that people generally plug their laptops and smartphones and fall asleep at night. You might have done the same in many instances. That's why you are looking for an answer to this question. This is not a big deal to leave laptops and smartphones left plugged charging for the whole night. Due to very hectic schedule and busy daytime routine, many of us get time at night or when we enter our house. For the entire day, the energy level of your precious gadget gets dissipated slowly but surely. So you will have to feed it to make it ready for the next day battlefield.
Now the answer to the above question is very simple. Your laptop comes with a kind of circuit breaker which gets activated whenever the charging level of the battery goes to the extreme or the maximum charging value. This will not allow the current to transfer to the battery but transmits the current to directly to the laptop supply. Think of it as a no-follow link. Once the door is shut no one can enter. This automatic shut-off feature helps in preventing overheating of the laptop components. As you, all know that there is a loss of energy in form of heat when it moves from one place to another in one form to another. The voltage supply which is A.C ( Alternating Current) at your home is stepped down and converted to Direct current with the help of charging device of your laptop. This energy is stored in the battery of the laptop for backup. Therefore if there is no circuit breaker installed in the system then the unlimited supply of energy will tend to store in a limited space of your battery. This can blow your battery and damage the laptop as well the user.
Does my smartphone has circuit breaker too?
The answer is YES !! Nowadays the smartphones have become real smart. it will automatically stop charging once the battery is full and the user can get a full battery in the morning despite the screen was on for the whole night. The Phone starts to draw all the power from the socket and reserves the power in the battery for backup. For more than two decades phones have become smarter but the battery remains more or less the same. The Software is really testing the limits of the battery. With high-end gaming files to HD movies all the power needed comes from a classic single source. Its time to upgrade and look beyond the traditional Lithium and nickel batteries.
To Summarize there is no harm in forgetting to take out the Laptop and Smartphone charger from the socket at night but do not make it a habit. In any case, if the circuit breaker is jammed or inactive massive destruction can take place. In a recent news on television, the dell laptop exploded due to improper functioning of shut-off device in the laptop and caused a total damage of $10 million in the company.