The fast-charging middle
Between 20 and 45 watts is where most recent phones reach their top charging speed. This page gathers every charger and power bank whose own listing gives a top figure above 20 watts and under 45. A charger here covers fast charging for most phones in a household without the size and weight of a laptop charger.
What is here
- Power banks at 22.5W: a slim 10,000mAh power bank with two USB-C cables built in, a 30,000mAh power bank with a built-in cable, and a 20,000mAh magnetic power bank that clicks onto the back of the phone. See shop by power bank size to compare them by capacity.
- A dual-port USB-C car charger at 30W with USB Power Delivery, offered with two USB-C sockets or one USB-C and one USB-A.
- A folding 3-in-1 wireless station on Qi2 at 25W, for a phone, earbuds and a watch together, which folds flat for travel.
Matching the watts to the phone
Galaxy phones with Super Fast Charging take 25 watts over USB Power Delivery with PPS, a part of PD that lets the phone ask for the voltage in small steps as it fills, so less heat ends up inside it. For a Galaxy at full speed, look for a charger that lists PD and PPS. Apple says the iPhone 17e and iPhone Air fast charge from 20 watts, earlier iPhones from 18 watts with PD, and the iPhone 17, 17 Pro and 17 Pro Max reach their quickest times from 40 watts or more. A charger near the top of this range suits those.
For wireless charging, Qi2 has a 15W tier and a faster 25W tier, and the station here is on the faster one. The phone has to support that speed to use it; others charge at their own top wireless speed.
Power banks and car chargers at this power
A power bank with around 20 watts of PD output fast-charges most phones, and the cable matters as much as the figure: use USB-C at both ends. In the car, a 30W charger fast-charges a phone running maps, and a second socket lets a passenger charge too. The watts are shared when both sockets are in use. Some lorries and vans run on 24 volts, so check the input printed on a car charger. The guide to fast charging goes further.
Questions people ask about 20W to 45W chargers
Do I need a special cable?
No. A standard USB-C to USB-C cable carries up to 60 watts, more than anything on this page needs.
Will this charge my iPhone and my partner's Galaxy?
Yes. USB Power Delivery works with both, and the phone takes only what it can use. For the Galaxy's top speed, the charger needs PPS as well.
More to look at