Buying Guide· Updated September 2026 · 9 min read

iPhone 18 Charger UK: What You Actually Need

Apple still doesn't put a charger in the box. Here is the honest answer to what the iPhone 18 needs, what it doesn't, and why a £12.99 charger fills it just as fast as Apple's £49 one.

Chargers That Max Out an iPhone 18

All three clear the ~27W an iPhone actually draws. Pick on ports and price, not wattage. CE certified, shipped from our UK warehouse.

45W

SmartGear 45W Super Fast Charger

Cheapest way to charge an iPhone at full speed, with two ports spare.

3 ports · 2× USB-C + 1× USB-A
Compact GaN · foldable plug
CE certified

£12.99

Buy at SmartGear

65W

SmartGear 65W GaN Dual USB-C

One charger for the iPhone and a MacBook Air, at the same time.

GaN III · 2× USB-C
Foldable UK plug
Samsung 45W PPS too

£19.99

Buy at SmartGear

100W

SmartGear 100W GaN Desktop Station

Desk hub — iPhone, iPad, AirPods and a laptop from one socket.

4 ports · 3× USB-C + 1× USB-A
100W PD 3.1 single port
Desktop housing

£24.99

Buy at SmartGear

Need the cable too? The SmartGear 100W USB-C cable is 2m and covers every iPhone at full speed.

The short answer

Any USB-C Power Delivery charger rated 30W or above will charge an iPhone 18 at its fastest wired speed. No iPhone generation has yet drawn more than about 27W, and the phone requests only the power it needs — so a 45W, 65W or 100W charger fills it at exactly the same rate as a 30W one. The extra wattage is useful for charging other things simultaneously, not for charging the phone faster.

Charger: USB-C PD, 30W or more
Cable: USB-C to USB-C rated 3A (60W) or higher
Wireless: Qi2 or MagSafe, up to 15W — roughly half wired speed
Not needed: Apple-branded accessories, or anything above 30W for the phone alone

What is settled, and what isn't

Plenty of “iPhone 18 charging” coverage states a peak wattage as fact. Apple does not publish one, and the real figure is only known once independent testing lands. Here is the honest split — and why it doesn't change what you should buy.

Settled: It charges over USB-C

Every iPhone since the 15 series uses USB-C. The EU common-charger rule makes a return to Lightning a practical impossibility.

Settled: No charger in the box

Apple has shipped iPhones without a mains adapter since the iPhone 12. Expect a cable at most.

Settled: A 30W+ USB-C PD charger will max it out

The phone requests the power it wants; the charger supplies it. Headroom above the phone’s ceiling is never forced into the battery.

Not yet confirmed: The exact peak wattage

Apple does not publish a wattage figure, and real peak draw is only known once independent testing lands. Every iPhone so far has peaked at or below ~27W.

Not yet confirmed: Any change to MagSafe or Qi2 speed

Qi2 wireless has been 15W on recent models. Treat any higher figure as unconfirmed until tested.

Why the unknowns don't matter: USB Power Delivery is a negotiation. Even if the iPhone 18 peaks higher than any previous model, a 45W or 65W charger already has the headroom to supply it. Buying above 30W future-proofs you regardless of what the final number turns out to be.

What iPhones actually draw

Measured peak wired draw across recent generations. Note the pattern: the ceiling has sat at or below 27W for years, which is why a 30W charger has been “enough” for every model since the iPhone 15.

Model	Peak wired draw	0–50%	Port
iPhone 16 Pro Max	27W	~30 min	USB-C
iPhone 16 Pro	27W	~30 min	USB-C
iPhone 16 / 16 Plus	27W	~30 min	USB-C
iPhone 15 Pro Max	27W	~30 min	USB-C
iPhone 15 Pro	20W	~35 min	USB-C
iPhone 15 / 15 Plus	20W	~35 min	USB-C
iPhone 18	Not yet independently measured	—	USB-C

We will update this row with a measured figure once the iPhone 18 has been tested rather than publishing a number we cannot stand behind.

The cable matters more than people think

The most common reason an iPhone charges slowly on a good charger is the cable. You need USB-C to USB-C. A USB-A to USB-C cable cannot negotiate Power Delivery properly and caps you at roughly 12W no matter what the charger is rated for.

Beyond that, almost any modern cable is fine: 3A (60W) is double what the phone will draw. A 100W E-Marker cable does no harm — it is simply more capability than a phone can use, and the same cable then also runs a MacBook at full speed.

SmartGear 100W USB-C Cable (2m)

E-Marker, 2m, braided. Covers the iPhone and a laptop with one cable.

Best USB-C Cables UK — full guide

Standards, myths and what each rating actually buys you.

Wireless: convenient, not fast

Recent iPhones charge at up to 15W on Qi2 and MagSafe — around half the wired speed, and less efficient, so more of the energy becomes heat. That makes wireless ideal for a bedside or desk top-up and a poor choice when you are about to leave the house.

Qi2 certified chargers explained Wireless vs wired, tested

Five mistakes people make buying an iPhone charger

Buying Apple’s 30W adapter for £49

It has one port and charges your iPhone at exactly the same speed as a £12.99 three-port GaN charger. You are paying for the logo.

Reusing an old 5W cube

A 5W charger takes roughly three hours to fill an iPhone. It works, but you lose fast charging entirely.

Using a USB-A to USB-C cable

USB-A cannot negotiate USB-C Power Delivery properly. You are capped around 12W regardless of what the charger is rated for.

Assuming a higher-wattage charger is dangerous

It is not. The phone’s charge controller draws only what it needs. A 100W charger and a 30W charger fill an iPhone at the same rate.

Buying an uncertified charger to save £4

Cheap unregulated adapters skip proper voltage regulation. Look for CE/UKCA marking as a minimum.

Why not just buy from Amazon?

Amazon risk

· Grey-market imports without UK plugs
· No UKCA mark — unknown safety testing
· Mixed inventory — genuine & fake in same bin
· 3rd-party sellers disappear after complaints

SmartGear guarantee

· CE/UKCA certified — independently tested
· UK warehouse — no import surprises
· Free UK delivery on every order
· 30-day returns, real UK support team

Frequently asked questions

What charger do I need for the iPhone 18?

Any USB-C Power Delivery charger rated 30W or higher will charge an iPhone 18 at its maximum wired speed. No iPhone generation to date has drawn more than about 27W, and the phone requests only the power it needs — so a 45W, 65W or 100W charger fills it at exactly the same rate as a 30W one, while leaving spare ports and headroom for a tablet or laptop.

Does the iPhone 18 come with a charger in the box?

No. Apple has not included a mains adapter with any iPhone since the iPhone 12 in 2020. You get the phone and, at most, a USB-C cable. You need to buy a charger separately.

Does the iPhone 18 use USB-C?

Yes. Every iPhone since the iPhone 15 series uses USB-C, and EU common-charger rules require USB-C on phones sold in the EU. You need a USB-C to USB-C cable, not USB-A to USB-C.

Can I use my iPhone 15 or iPhone 16 charger with an iPhone 18?

Yes. Any USB-C PD charger that worked with an iPhone 15 or 16 will work with an iPhone 18. USB Power Delivery is a standard, not a per-model accessory, so chargers carry over between generations.

Will a 65W or 100W charger damage an iPhone 18?

No. Charging is negotiated: the phone tells the charger what voltage and current to supply, and the charger cannot force more into it. A 100W charger charges an iPhone at the same speed as a 30W one — the extra capacity is only useful for charging other devices at the same time.

What cable does the iPhone 18 need?

A USB-C to USB-C cable rated for at least 3A (60W). Any decent cable clears that comfortably. You only need a 5A E-Marker cable for laptop-class charging at 100W and above — it does no harm on a phone, it is simply more than the phone will ever use.

How fast does the iPhone 18 charge wirelessly?

Recent iPhones charge at up to 15W on Qi2 and MagSafe chargers, which is roughly half the speed of wired charging. Wireless is convenient for overnight and desk-side top-ups; wired is the faster choice when you are in a hurry.

The bottom line

Buy a USB-C PD charger of 30W or more and a USB-C to USB-C cable. That is the whole requirement. Spend the difference on ports rather than watts: a three-port 45W charger at £12.99 charges your iPhone 18 exactly as fast as Apple's £49 single-port adapter, and also handles your iPad and AirPods.

Best iPhone USB-C Chargers Best Fast Chargers UK Calculate your charge time