Wireless charging has become one of those small but satisfying conveniences of modern smartphones. You drop your device on a pad and watch the battery percentage climb without fiddling with cables or ports. Yet for many users, that effortless charge doesn’t always come at the speed they expect. Sometimes the phone warms up, the percentage barely rises or charging takes far longer than it would if you plugged it in.
Getting the fastest possible wireless charge requires more than just setting your phone on a pad. It depends on using the right equipment, like one of the best wireless chargers or the best multi-device wireless charging pads, plus the latest standards and a setup that makes the most of your phone’s capabilities. Here’s everything you need to know about getting the maximum wireless charging speeds for your smartphone.
How wireless charging actually works
Wireless charging relies on electromagnetic induction. When you place your phone on a compatible pad, electricity flows through a coil inside the charger, creating an electromagnetic field. Another coil inside your phone captures that energy and converts it back into electricity to refill the battery. It sounds simple, but efficiency depends on how precisely those two coils align, how much power the charger can deliver and how well the phone can handle the heat that builds up during the process.
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For years, the Qi standard from the Wireless Power Consortium defined how most wireless chargers worked. Nearly every major smartphone brand supports Qi, and you can mix and match chargers and phones from different manufacturers with little trouble.
But the new Qi2 standard, which began rolling out in 2024 and has expanded in 2025, changes how well that power is transferred. Qi2 uses magnetic alignment to snap the phone and charger into the ideal position automatically, reducing wasted energy and heat. It also allows for higher charging speeds, with Qi2 chargers now supporting 15 to 25 watts of output depending on the device.
Understanding what “max power” really means
Each smartphone has a built-in limit to how much power it can receive wirelessly. The iPhone 12 models and later, for instance, support up to 15 watts with MagSafe, and Samsung’s S25 Galaxy series can handle similar speeds through Qi2. If you use a charger that delivers less power than your phone’s maximum, it’ll charge slower. For example, if you use a 10W wireless charger on an iPhone 17, the max speeds will top out at 10W. But even if you buy the most powerful pad on the market, you won’t get results beyond what your phone’s receiver can manage.
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