A wireless charger is a convenience, not a speed upgrade. Most phones charge more slowly on a pad than on a good cable, and some energy is lost as heat. What you gain is the habit of putting the phone down and finding it charged, on a bedside table, a desk or in the car.
The choice comes down to three things. First, the standard your phone supports: almost all recent phones that charge wirelessly use Qi, and newer ones also support Qi2, the magnetic version, or Apple’s MagSafe. Second, the shape: a flat pad, an upright stand, a multi-device station or a car mount. Third, the power supply, because a charger can only deliver what the plug behind it provides.
You will find all of these in the wireless charger range. The category also contains a few pieces of furniture with built-in charging pads, so read the title before you compare prices.
Qi, Qi2 and MagSafe explained
| Standard | How it works | Good to know |
|---|---|---|
| Qi | The original wireless charging standard; you place the phone on a coil | Position matters; misaligned phones charge slowly or not at all |
| Qi2 | Adds a ring of magnets that snaps the phone into the right place | Introduced by the Wireless Power Consortium in 2023, based on Apple’s MagSafe design |
| MagSafe | Apple’s magnetic charging for iPhone 12 and later | Official MagSafe chargers can charge compatible iPhones faster than plain Qi |
| “Magnetic” or “MagSafe compatible” | Magnets for alignment, but not certified | On iPhones these are often limited to the basic Qi speed |
Magnets do more than hold the phone: they line up the charging coils, which improves efficiency and reduces heat. If your phone has no magnets built in, a magnetic case or a thin magnetic ring can add the snap-on fit, but the charging speed is still decided by what the phone and charger support.
Pad, stand, station or car mount
- Flat pad: cheap and compact, good on a bedside table. The phone has to be placed accurately unless the pad is magnetic.
- Stand: holds the phone upright, so you can see notifications, use face unlock and watch video while it charges. Good for desks.
- 2 in 1 and 3 in 1 stations: charge a phone, earbuds and often a watch at once. Check that the watch charger matches your watch, as Apple, Samsung and other brands use different chargers.
- Car mount: a holder with a charging coil, clipped to an air vent or dashboard. Useful on long journeys with navigation running; see also car phone holders.
- Power bank with wireless charging: handy away from sockets, but slower and less efficient than charging by cable.
For a desk without wireless charging, a simple phone stand and a cable may be all you need.
What the watt figures mean
Wireless chargers are sold with figures such as 5 W, 7.5 W, 10 W and 15 W. The phone always takes the lowest of three limits:
- What the phone itself accepts wirelessly.
- What the charger can deliver for that phone’s standard.
- What the mains adapter and cable can supply to the charger.
That third point catches many people out. A 15 W pad plugged into an old 5 W USB plug will not reach 15 W. Many chargers are sold without a plug, or with only a cable, so check the listing and use a USB-C Power Delivery or Quick Charge adapter of the recommended wattage. The post on choosing a USB-C charger and the USB-C charger range cover that side.
Also expect charging to slow down as the battery fills and when the phone warms up. That is normal and protects the battery.
Cases, heat and safety
- Cases: most thin plastic and silicone cases are fine. Thick cases, metal plates, card wallets and pop sockets can block charging or make it very slow.
- Heat: some warmth is normal. If the phone gets hot, remove the case, keep the charger out of direct sun and avoid charging under a pillow.
- Foreign objects: keys, coins and bank cards should never sit between the phone and the pad.
- Quality marks: look for chargers that state Qi or Qi2 certification and a UKCA or CE mark, and buy from shops that list a manufacturer and model number.
- Bedside use: a charger with a dim or switchable status light is easier to sleep next to.
Quick checklist
- Your phone’s standard: Qi, Qi2 or MagSafe.
- Shape: pad, stand, multi-device station or car mount.
- Watch charger type matches your watch, if you need one.
- Wattage for your phone, not only the headline figure.
- A suitable mains adapter included or bought separately.
- A case that is thin enough and has no metal.
- Certification and a clear make and model in the listing.
For other parts of a home office set-up, see the guide to choosing a home printer.
Common questions
Does wireless charging damage the battery?
Not in normal use. Heat is what shortens battery life, so a well made charger, a thin case and a cool spot matter more than the charging method. Phones also manage charging speed themselves to limit heat.
Will a Qi2 charger work with an older phone?
Usually yes, at basic Qi speed, as long as the phone supports Qi wireless charging. Without built-in magnets the phone will not snap into place, so you may need to position it carefully or use a magnetic case.
Why does my phone charge so slowly on the pad?
The most common reasons are a low-power mains adapter, a phone that is slightly off-centre, a thick case and heat. Try a stronger adapter, remove the case and check the phone is centred on the coil.
