Wireless PowerShare is what Samsung is calling the reverse wireless charging feature on the Galaxy S10 series,Note10 series and Galaxy 20 series.It lets you share your Galaxy S10’s power with another device by simply putting it back-to-back with the device you want to charge. Most Qi-compatible devices will work with this feature so it’s not just limited to Samsung devices. You can wirelessly charge iPhones with this if you so desire.
The best use case for this feature is to charge your Galaxy Buds or Galaxy/Gear smartwatch because charging another smartphone with Wireless PowerShare will just take too long. Not to mention the fact that you’ll have to keep the two devices flat against each other as the connection would break otherwise. This feature would come in handy when you’re in a pinch and just need enough charge to fire up a dead smartphone, though.
Do bear in mind that it’s not fast wireless charging by any stretch of the imagination. It’s at 4.5W which, when you put into context, is half of what Qi wireless chargers are normally rated to, which is 9-10W. Samsung’s Fast Charge wireless charging is rated at 7.5W on the Wireless Charger Duo, so you’ll most likely gain about 10 percent charge on a Qi-enabled smartphone in 30 minutes with Wireless PowerShare. Thus, this feature is best utilized for devices with smaller batteries like the Galaxy Buds.
It does have a neat trick up its sleeve. Dual charging is possible with this feature. You can hook up your Galaxy device to an outlet with a wire and place another device on the phone’s back. The Galaxy device will charge its battery and wirelessly charge the other device simultaneously. This will be very useful as you can make sure that when you wake up in the morning, your Galaxy device and Galaxy Buds or Watch are both fully charged and ready for the day.
