What is MagSafe?

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About MagSafe

MagSafe charger is a wireless charger/power bank that connects to the back of your wireless-compatible mobile phone to charge your phone in the easiest of ways.
It is equipped with either a 5,000 or a 10,000 mAh battery pack on the inside, which can be used as a power backup.
This type of charger uses the magnetic current present at the back of your mobile phone and the magnets on the MagSafe charger.
A good MagSafe charger is just like any other wireless power bank that attaches to your mobile phone and works as a power bank.
As with any other power bank, a MagSafe charger also needs to be charged.
Working
- It is a type of power bank that is only compatible with devices that support wireless charging.
- The MagSafe chargers, after you fix them directly on the back of your mobile phone, connect to the magnets on the charger that complete the circuit.
- The complete circuit allows the current to flow from the power bank to the device, which allows the charger to charge your mobile phone.

Q1) What is the Magnetic field?

It is a vector field in the neighbourhood of a magnet, electric current, or changing electric field, in which magnetic forces are observable. Magnetic fields such as that of Earth cause magnetic compass needles and other permanent magnets to line up in the direction of the field.

Source: What is MagSafe? How Does Magsafe Work?