How to Use Samsung Wireless PowerShare to Charge Other Devices

Samsung Wireless PowerShare lets compatible Galaxy smartphones function as portable charging mats, allowing users to siphon battery power directly into other phones, earbuds, and smartwatches.

Galaxy Phone Compatibility and Requirements

The feature works primarily on recent flagship hardware, specifically the Galaxy S10 through S26 series, Note 10 and Note 20 lineups, Z Fold models, the Z TriFold, and Z Flip devices. Older hardware like the Galaxy S7 through S9 series and Note 8 can receive power from another device but lack the hardware to share it outward.

To initiate a transfer, the sharing phone must retain a battery charge above 30 percent. Once activated via the quick-settings notification panel, the feature continues transferring power until the host device drops to that 30 percent threshold. Users experiencing connection failures should remove thick protective cases, ensure the back glass is clean, and align the secondary device directly against the center of the host phone.

Cross-Brand Compatibility and Accessories

Wireless PowerShare is not restricted strictly to Samsung-branded hardware. The system supports any device compliant with WPC Qi-certification standards, which includes Apple iPhones and various other Android manufacturers. It also charges proprietary Samsung accessories, such as the Galaxy Ring and most iterations of Galaxy Buds and Galaxy Watches, with specific exceptions like the Watch7.

Performance Limitations and Heat Generation

While functioning as a useful emergency backup, the system has notable drawbacks in efficiency. Wireless charging loses significantly more electricity to thermal dissipation than wired connections, resulting in a notably slow charging speed that cannot compete with a dedicated portable battery pack. Furthermore, the process produces high thermal output, which can accelerate degradation in the lithium-ion batteries of both devices over time.