For people on the go, wireless charging is slowly gaining popularity and smartphone makers are increasingly working towards making wireless charging technology seamless.
The costs associated with wireless charging technologies have declined over time due to its increasing popularity in the portable device market, resulting in high acceptance of this technology, especially among users living in metros.
Wireless charging means that users do not need to plug a cable into the smartphone to charge it. It is a recently introduced new and innovative technology in India.
“Various mobile phone manufacturers are cutting the cord in their new products and the mobile phone model launched has wireless charging facility. This means that 2019 is an early year where major technology companies are implementing wireless charging on a large scale, ”Kashish Lalit, Director, Toro Retail Pvt Ltd. Ltd, told IANS.
“Wireless charging is a vast area that requires constant research and development and in the coming year, we will be wirelessly charging more than 50 percent of our daily devices and accessories.”
The technology was first introduced by Huawei in its Mate 20 Pro smartphone, then by Samsung between Android phones with the Galaxy S10 and Note 10 series. With the expansion of technology with increasing demand, more prominent smartphones are expected to follow suit.
In the iOS ecosystem, Apple iPhone 8, 8 Plus, X, XR, XS and XS Max are products that offer wireless charging.
Many smartwatches provide wireless charging technology with some tablets such as Apple Watch, Moto 360, LG Watch Style and Samsung smartwatch, Nexus 7. The recently launched Huawei Watch GT also promises full-charge for about a week.
Also known as inductive charging, wireless charging works on the same principle as induction cooktops – electromagnetic induction or bus induction. It works by transferring energy from the charger to the receiver on the back of the smartphone. Wireless charging requires both phone and charger to have an induction coil.
Once these coils detect each other, they begin to generate electromagnetic fields resulting in the transfer of energy from the charger to the phone. In terms of performance, some wireless chargers are faster than others due to high power chargers that are able to fully charge smartphones with larger batteries in about two hours while some are slower.
The biggest advantage of wireless charging is that one does not need to deal with cable. In addition, there is a small risk of electrical faults. According to David Green, a research manager at IHS Markit, there are three types of wireless charging.
Smartphone case makers Spygen and Ossia, a wireless charging technology vendor working on a smartphone case, will be able to charge phones without wires, plugs or pads through over-the-air charging. It is expected to debut in 2020.
Over-the-air charge can deliver small amounts of power from inches to 3 feet and devices with small batteries can be charged within 30 minutes to an hour.
The technology works on a transmitter that distributes energy in the form of radio waves to devices that have WattUp (RF-based scalable technology) receivers. These wattup receivers convert radio waves into DC power that recharges the device’s battery. Wireless charging with WattUp enables both contact-based and over-the-air wireless charging for small electronic devices in an ecosystem.