Tech Desk: Running low on battery with no charger or power bank in sight? Many modern smartphones now offer a crucial lifeline: reverse charging. This innovative feature allows your device to act as a portable power bank, transferring power to another phone when you need it most. With today’s phones boasting massive 7000-10000 mAh batteries, they are increasingly capable of serving as mini power hubs, potentially reducing the need for traditional power banks.

There are two primary ways to utilize reverse charging. Some high-end phones feature wireless power sharing, such as Samsung’s ‘Wireless PowerShare’ or Google Pixel’s ‘Battery Share’. To use this, simply enable the feature in your phone’s settings, then place the recipient phone back-to-back with your device, ensuring their charging coils align. Remember to remove any thick cases. Alternatively, many phones support wired reverse charging via a USB-C cable. This method, however, depends on specific phone models and their internal technology, not just the presence of a USB-C port.

It’s crucial to understand a few key considerations. Not all phones support reverse charging, and for wireless sharing, both devices need wireless charging capability. This is an emergency solution, not a fast charging method, and should not be relied upon for full charges. Phones may generate heat during the process, especially wirelessly; discontinue if they get too hot. Naturally, the source phone’s battery will deplete, and some devices automatically stop charging at a certain battery level.

While handy for emergencies, reverse charging isn’t designed for daily use. It offers a temporary boost to get through critical moments. Check your phone’s settings to see if this feature is available – it could be a lifesaver when you’re caught without a charger.