Most of the latest mobile devices comes with Wireless charging option. Wireless charging means you no longer need to connect cable between power plug and your smartphone. Latest mobile devices iPhone X, iPhone 8, Samsung Galaxy S8 or any number of different smartphones support wireless charging.
Let us understand how charging works.
Wireless charging works by transferring energy from the charger to a receiver in the back of the phone via electromagnetic induction. The charger uses an induction coil to create an alternating electromagnetic field, which the receiver coil in the phone converts back into electricity to be fed into the battery.
What’s ‘Qi’ wireless charging ?
There are a couple of competing standards in the wireless charging industry designed for portable gadgets such as smartphones. Most smartphones support both the Wireless Power Consortium’s Qi and the PMA or AirFuel Alliance standards, meaning that they will work on most available chargers.
Qi is rapidly becoming the most popular wireless charging standard, and the one used by Apple for its new iPhone 8 and iPhone X.
Are there any downsides?
- The biggest downside is that wireless charging cannot be performed through metal with current technology. That means most wirelessly charging smartphones have either plastic or glass backs, the later of which makes them more fragile.
- It also may not work through thick cases, although generally does through thin plastic cases, dependent on the phone and the charger.
- It is slow and not very efficient when you compare it to using a cable.
Must watch video about wireless charging