Reverse Wireless Charging: Benefits, Risks, and Battery Impact
May 29, 2020 By Claire
Power & Sync

Reverse Wireless Charging: Benefits, Risks, and Battery Impact

In the ever-evolving landscape of technology, one of the most intriguing innovations is reverse wireless charging. This technology allows a device, typically a smartphone, to charge other devices wirelessly. While it may seem like something out of a sci-fi movie, reverse wireless charging is becoming more common in high-end smartphones.

What Is Reverse Wireless Charging and How Does It Work?

Reverse wireless charging is a technology that is only found in select smartphones. Using the same technology as standard wireless charging, it transforms your phone into a wireless power bank.

turning your phone into a wireless charging pad reverse wireless charging

Although it can be challenging to align the two devices, many phones featuring reverse wireless charging allow the user to place any Qi device on the phone’s wireless pad. Once in position, the device in need of juice will begin charging.

The Pros and Cons of Reverse Wireless Charging

While turning your phone into a wireless charging pad sounds great, the usefulness of reverse wireless charging is subject to much debate.

The Pros

Charge Your Wireless Accessories

charge your wireless accessories on your phone

In addition to charging other phones, reverse wireless charging is also capable of charging Qi-enabled accessories, such as AirPods and even smartwatches. These small accessories only require a small amount of energy, making reverse wireless charging an ideal solution for quickly powering up your everyday accessories.

A quick Battery Boost When You or Your Friend Needs It

Though reverse wireless charging doesn’t offer a large boost when charging a smartphone, it is enough for the user to make a phone call or travel home safely.

While the majority of smartphone users rely on a power bank or additional charging during the day, remembering to charge a power bank or carry a cable is still a daily challenge for many. But reverse wireless charging can be utilized in situations when you aren’t prepared.

A good example of a device with reverse wireless charging is the Samsung Galaxy Series. With Wireless Powershare it can charge any Qi-enabled smartphone, including an iPhone 11.

The Cons

Reverse Wireless Charging Is Slow

One of the biggest drawbacks of reverse wireless charging is that it is much slower than other forms of charging. A series of tests by YouTuber Juan Bagnell found that a Samsung S10 was only able to increase the charge of an LG V40 by 8% over thirty minutes. Compare this with charging using a wall outlet, which can charge your battery up to 50% in the same amount of time.

Reverse wireless charging is only useful if it is the only available option or if you need it in an emergency.

It’s inefficient

For every 2% of battery, you add to one device, 5% drains from the other. This is an electrical transfer loss of 60%. Furthermore, reverse wireless charging creates a large amount of heat and requires the device to act like a wireless power bank to be placed facedown for a long period: it takes an hour to charge just 10% of the battery.

Bad for your Battery

Factors such as overheating can cause the battery of your phone to break down faster than usual.

Wireless charging already generates much more heat than wired charging and this, in addition to the heat a phone and battery creates on its own, makes it easy to see why reverse wireless charging raises the temperature of a phone so dramatically. For this reason, reverse wireless charging should be reserved for essential use only, otherwise you risk damaging your phone’s battery.

It is inconvenient, too

Reverse wireless charging is also inconvenient. It requires one phone to be placed face-down on a flat surface so that the devices remain connected. This not only prevents the user from accessing the phone that is providing the charge, but also the device that it is charging. Since reverse wireless charging a phone up to 10 percent may take more than 30 minutes, this can prove difficult for even the most patient people. Placing a phone face down also increases the chance of scratching the screen.

Do We Really Need Reverse Wireless Charging?

After considering the pros and cons of reverse wireless charging, it is an inconvenient solution to a situation in which few users find themselves: no access to a charger, power bank, or cable with which to charge their device.

The truth is that while reverse wireless charging is an innovative use of wireless charging, it is still in its infancy and not yet advanced enough for general use.

MagEZ Slider 2: A Detachable 3-in-1 Wireless Charger

One of the major advantages of reverse wireless charging is that it eliminates the need to carry a power bank and cable to charge your mobile device. If you like the idea of reverse wireless charging but do not want to commit just yet, there is a solution: the MagEZ Slider 2.

The MagEZ Slider 2 is a magnetic 3-in-1 wireless charger with a detachable power bank that removes the need for cables and bulky power banks. The MagEZ Slider 2 power bank magnetically attaches to the back of your iPhone 12, iPhone 13, or a phone using a MagSafe Case to provide additional charge throughout the day. With its unique grab-and-go technology, the MagEZ Slider battery pack can be removed from the stand to travel with you, easily sliding into your pocket.

The Future of Wireless Charging

It has become clear over the last five years that wireless technology will soon be replacing wired charging. While reverse wireless charging may be a step in that direction, it is not quite ready for the average user. In the meantime, you can consider picking up a magnetic wireless charging power bank like the MagEZ Battery Pack.

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