Fast charging and cables: what you actually need
8 Oct 2026
Many people buy a powerful charger and wonder why charging is still slow. Charging speed depends on three things together: the charger, the cable and the device, and the weakest one sets the speed.
1. What is fast charging?
The best-known standards are USB Power Delivery (PD), the most widespread, Quick Charge, and Samsung fast charging. A PD charger works with most modern phones, and iPhones charge quickly with a 20W adapter; Apple says it reaches 50% in about 30 minutes.
2. Port type
- USB-C: Android phones, iPhone 15 and later and most modern devices.
- Lightning: older iPhones, which need a USB-C to Lightning cable.
3. How many watts do I need?
A charger stronger than your device needs is safe: the device only draws what it needs. So pick a charger at or above your device's power: around 20–30W for phones, 45–65W for tablets and light laptops.
4. Pick the right cable
A cheap, thin cable can limit the speed. For high power (above 60W) look for a cable made for it. Choose the length for how you use it: 1 metre for a desk, 2 metres for bed.
5. Wireless charging
Convenient and cable-free, but usually slower and warmer. Good for night-time or a desk. Browse wireless chargers.
6. Quick tips
- When buying a charger, check whether the cable is included; we state it in each charger's specifications.
- Avoid chargers of unknown origin; they are harder on the device battery.
- Do not charge under a pillow or in a hot place.
