Should you plug in your phone or the charger first?
When charging a mobile phone, it is recommended to plug the charger into the power source first and then connect it to your phone. This is because the charger converts high-voltage electricity into low voltage through a transformer, which is then transferred to the phone.
If you connect your phone to the charger before plugging it into the power source, there is a risk of the phone receiving a sudden voltage spike. However, by plugging the charger into the power source first, this situation is highly unlikely, unless the power supply is unstable.
It is best to always plug the charger into the power source first to avoid any potential electrical shocks.
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Plugging the charger into the power source first is considered the right step in the entire charging process.
Should you unplug your phone or the charger first when charging is complete?
It is recommended to unplug your phone from the charger first. When unplugging the charger, reverse electricity is created, which can accelerate the aging process of the battery.
Although the principle may seem complex, you can remember it simply by thinking of the charger, charging cable, and power outlet as one unit. When charging, the phone is “attached” to the charger, and when it is fully charged, the phone is “removed.”
Do you need to charge your phone to 100%?
Most phone batteries are lithium-based and work through a continuous process of charging and discharging between the positive and negative electrodes. If the battery is overcharged or deeply discharged, the structure of these electrodes can be damaged, reducing the capacity and lifespan of the battery.
While many phones have overcharge protection, it is still advisable to develop good charging habits. The best practice is to not wait until the battery is completely drained before charging and instead, charge frequently at lower levels to prolong battery life.
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Should you plug in your phone or the charger first? 90% of people still get it wrong.
What are the dangers of incorrect phone charging practices?
Most users have the habit of leaving the charger plugged into the power outlet after each charging session. This not only wastes electricity but also poses a fire hazard, especially when using some uncertified or unknown chargers.
Additionally, continuously leaving the charger plugged into the power outlet can cause it to heat up, leading to electrical shorts and potential explosions. Therefore, after charging your phone, it is recommended to unplug the charger from the power source to ensure the safety of your device and those around you.
During the charging process, the smartphone receives power from the charger through the charging cable. Here, the phone charger acts as a transformer, converting high voltage to low voltage (from 220V to 5V, 9V, 12V, etc.) and delivering direct current from the low voltage transformer to fully charge the battery system.
Therefore, in the entire charging process, plugging the charger into the power source first is considered the correct step. This is because the power must be stepped down by the transformer before it can safely charge the phone.