When you charge your phone, what should you connect first: your phone or charger?

The battery is one of the most sensitive and expensive components of a mobile phone. Although most devices today have protection systems, bad charging habits can significantly shorten their duration. Following simple guidelines can help you keep your smartphone in good shape for much longer.

1. Which to connect first: the phone or the charger?

The correct thing to do is to connect the charger to the power outlet first and then to the phone.
If you do the opposite, there is minimal risk that the phone will be exposed to a voltage spike before the charger stabilizes the voltage. By plugging in the charger first, it acts as a transformer and safely reduces the voltage.

2. What to disconnect first after charging?

When finished, the phone must first be disconnected from the charger and then the charger must be removed from the power outlet.
This prevents a reverse current flow from being generated that accelerates battery wear.

3. Should it be charged up to 100%?

Lithium batteries do not always need to reach 100%. In fact, it is best to keep the charge at intermediate levels and not let it discharge completely.
Charging up to 100% consistently or allowing it to empty completely can damage the electrode structure and reduce battery capacity.

4. Dangers of improper loading

Many users leave the charger plugged into the socket even when it is not in use. This is a mistake:

• It wastes unnecessary energy.
• It can cause overheating, short circuits, or even fires, especially if poor quality chargers are used.
  It is safest to always unplug the charger after charging is complete.

5. Basic rules for safe charging

• Connect the charger to power first, then to your phone.
• Unplug your phone before removing the charger from the outlet.
• Avoid charging to 100% or discharging the battery completely.
• Do not leave the charger plugged in if you do not use it.
• Always use official or certified chargers for your device.

Tips and recommendations

• Keep your phone in a ventilated place while charging, avoiding soft surfaces such as beds or sofas.
• Do not use the phone with demanding applications while charging, as the temperature increases.
• Replace the charger if you notice that it is overheating or visibly damaged.

Charging your smartphone correctly not only extends battery life, but also protects your safety and that of your environment. With simple habits and basic precautions, your device will be able to perform optimally for longer.