Which charger does my iPhone need?
Short answer
A 20W USB-C Power Delivery adapter fast charges every iPhone from iPhone 8 to iPhone 16, plus iPhone Air and iPhone 17e — Apple specifies 18W or more for iPhone 15 and later 1. iPhone 17, 17 Pro and 17 Pro Max reach Apple's fastest time (50% in about 20 minutes) with a 40W adapter or higher, and iPhone 18 Pro and Pro Max (50% in about 15 minutes) need a 60W adapter with Adjustable Voltage Supply (AVS). A 20W adapter still charges those models, more slowly.
Model-by-model table
Pick your iPhone above. We'll show you exactly what to expect.
iPhone 18 Pro, iPhone 18 Pro Max
Not the right adapter if speed matters.
Fermi20 will charge it, but it is not the right adapter if speed matters. Choose a 60W adapter with AVS.
Cable: USB-C to USB-C
Apple: 60W+ adapter with USB PD 3.2 AVS for ~50% in ~15 min
iPhone Duo
We're still confirming this model.
Cable: USB-C to USB-C
Apple: Being confirmed
iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max
Works well. Step up for Apple's fastest time.
Charges well overnight and at a desk. For Apple's 20-minute figure, step up to a 40W+ adapter.
Cable: USB-C to USB-C
Apple: 40W+ adapter for ~50% in ~20 min
iPhone Air, iPhone 17e
A good fit. A 30W adapter is slightly quicker.
Fast charges it. iPhone 16 and later can charge faster above 20W.
Cable: USB-C to USB-C
Apple: 20W+ adapter for ~50% in ~30 min
iPhone 16, iPhone 16 Plus, iPhone 16e
A good fit. A 30W adapter is slightly quicker.
Fast charges it. iPhone 16 and later can charge faster above 20W.
Cable: USB-C to USB-C
Apple: 18W+ adapter (iPhone 15 and later rule)
iPhone 16 Pro, iPhone 16 Pro Max
A good fit. A 30W adapter is slightly quicker.
Fast charges it. iPhone 16 and later can charge faster above 20W.
Cable: USB-C to USB-C
Apple: 18W+ adapter
iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max
The right fit.
The right fit. The Pro Max can take about 25W, so a 30W adapter is roughly 10 minutes quicker to full.
Cable: USB-C to USB-C
Apple: 18W+ adapter
iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 13 (all), iPhone 12 (all), iPhone SE (2nd, 3rd gen)
The right fit.
The right fit. Use a USB-C to Lightning cable; an uncertified cable may stop fast charging.
Cable: USB-C to Lightning (MFi-certified recommended) Use a certified USB-C to Lightning cable; an uncertified cable may stop fast charging.
Apple: Apple 18W+ USB-C adapter or USB PD equivalent, with USB-C to Lightning cable
iPhone 11 (all), iPhone XS, iPhone XS Max, iPhone XR, iPhone X, iPhone 8, iPhone 8 Plus
The right fit.
Fast charges with a USB-C to Lightning cable.
Cable: USB-C to Lightning Use a certified USB-C to Lightning cable; an uncertified cable may stop fast charging.
Apple: Apple 18W+ USB-C adapter or USB PD equivalent
We couldn't load the compatibility table. The full table is at /compatibility/iphone-charger/.
| iPhone | Port and cable | What Apple specifies for fast charging | What a 20W adapter does (independent tests) | Compatible | Fast charges by Apple's rating on 20W | Our advice |
|---|---|---|---|---|---|---|
| iPhone 18 Pro, iPhone 18 Pro Max | USB-C · USB-C to USB-C | 60W+ adapter with USB PD 3.2 AVS for ~50% in ~15 min 1 | — | Yes | No | Fermi20 will charge it, but it is not the right adapter if speed matters. Choose a 60W adapter with AVS. |
| iPhone Duo | USB-C · USB-C to USB-C | Being confirmed | — | Yes | Being confirmed | We're confirming Apple's requirement for this model. |
| iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max | USB-C · USB-C to USB-C | 40W+ adapter for ~50% in ~20 min 1 | iPhone 17: ~19W for first 36 min; 50% in 27 min, 80% in 52 min, 100% in 1 h 50 min (ChargerLAB data via Notebookcheck, 25C) 23 | Yes | No | Charges well overnight and at a desk. For Apple's 20-minute figure, step up to a 40W+ adapter. |
| iPhone Air, iPhone 17e | USB-C · USB-C to USB-C | 20W+ adapter for ~50% in ~30 min 1 | — | Yes | Yes | Fast charges it. iPhone 16 and later can charge faster above 20W. |
| iPhone 16, iPhone 16 Plus, iPhone 16e | USB-C · USB-C to USB-C | 18W+ adapter (iPhone 15 and later rule) 1 | Standard iPhone 16 tops out around 20W wired (MacRumors) 4 | Yes | Yes | Fast charges it. iPhone 16 and later can charge faster above 20W. |
| iPhone 16 Pro, iPhone 16 Pro Max | USB-C · USB-C to USB-C | 18W+ adapter 1 | 16 Pro: 100% in 2 h 6 min on 20W vs 1 h 59 min on 140W (25C). 16 Pro Max average 18.86W on 20W; peaks ~30-31W on larger adapters 567 | Yes | Yes | Fast charges it. iPhone 16 and later can charge faster above 20W. |
| iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max | USB-C · USB-C to USB-C | 18W+ adapter 1 | 15 Pro Max: average 18.65W on 20W; 0-100% 2 h 21 min on 20W vs 2 h 11 min on 30W; peak ~25W on larger adapters 896 | Yes | Yes | The right fit. The Pro Max can take about 25W, so a 30W adapter is roughly 10 minutes quicker to full. |
| iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 13 (all), iPhone 12 (all), iPhone SE (2nd, 3rd gen) | Lightning · USB-C to Lightning (MFi-certified recommended) | Apple 18W+ USB-C adapter or USB PD equivalent, with USB-C to Lightning cable 1 | 14 Plus: ~19.5W plateau ~37 min; 50% 32 min, 80% 1 h, 100% 2 h 11 min (ChargerLAB). iPhone 12: 57% in 30 min (Tom's Guide) 1011 | Yes | Yes | The right fit. Use a USB-C to Lightning cable; an uncertified cable may stop fast charging. |
| iPhone 11 (all), iPhone XS, iPhone XS Max, iPhone XR, iPhone X, iPhone 8, iPhone 8 Plus | Lightning · USB-C to Lightning | Apple 18W+ USB-C adapter or USB PD equivalent 1 | — | Yes | Yes | Fast charges with a USB-C to Lightning cable. |
Cables: the part people forget
iPhone 15 and later (USB-C). Any USB-C to USB-C cable rated for 3 amps carries the full 20 watts. At 20W you don't need a special "e-marked" cable; those only matter above 3 amps 1213. The cable that came with your iPhone is ideal.
iPhone 14 and earlier (Lightning). You need a USB-C to Lightning cable, not a USB-A to Lightning cable — the older USB-A type can't carry USB Power Delivery, so it won't fast charge. Choose Apple's own cable or one carrying Apple's MFi (Made for iPhone) badge. MFi certification applies to Lightning cables; it does not apply to, and is not needed for, a USB-C wall adapter.
If your iPhone is charging slowly, try a different cable before you blame the adapter. A worn or uncertified cable is the most common cause.
MagSafe
MagSafe charging goes through Apple's MagSafe Charger, which plugs into your adapter.
- iPhone 15 and earlier: up to 15W with MagSafe, using a 20W or higher adapter 1.
- iPhone 16, iPhone 17 and iPhone Air: Apple specifies a 30W or higher adapter for faster MagSafe charging 1. A 20W adapter still powers the MagSafe Charger, at a lower rate.
- iPhone 18 Pro: Apple quotes 50% in about 30 minutes with MagSafe and a 35W or higher adapter 1.
If MagSafe is how you charge every day on iPhone 16 or later, a 30W adapter is the better buy.
iPad, AirPods and Apple Watch
Apple lists many iPad models as compatible with its 20W adapter, including recent iPad Pro, iPad Air, iPad and iPad mini models 14. Apple doesn't publish iPad charge times on 20W, and larger iPads will charge faster on a higher-wattage adapter. AirPods charge normally on any 20W adapter, and so does Apple Watch with its own charging cable.
Decision aid
Do you have iPhone 17, 17 Pro, 17 Pro Max, 18 Pro or 18 Pro Max, and want the fastest charge? → Yes: choose 40W or more for iPhone 17 models, and 60W with AVS for iPhone 18 Pro. → No, or you mostly charge overnight: 20W is fine.
Do you charge on MagSafe every day with iPhone 16 or later? → Yes: choose 30W or more. → No: 20W is fine.
Do you have iPhone 16 Pro Max or 15 Pro Max and want every minute back? → Yes: 30W saves around 7–10 minutes on a full charge in independent tests 59. → No: 20W is fine.
Everything else — iPhone 16, 15, Air, 17e, 14 and earlier: 20W is the right fit.
Questions
Can I use a 20W charger with iPhone 17? Yes. It charges safely and reasonably quickly: independent tests show an iPhone 17 reaching 50% in about 27 minutes on 20W 2. Apple's quickest figure for iPhone 17 models needs 40W or more 1.
Is a higher-wattage charger safe for an older iPhone? Yes. A USB Power Delivery charger only supplies what the iPhone asks for, so a 45W or 67W adapter won't push extra power into an iPhone that wants 20W 15.
Does iPhone support PPS? Apple doesn't list Programmable Power Supply (PPS) among its requirements. iPhone fast charges using USB PD's fixed levels, and iPhone 17 and 18 Pro use Adjustable Voltage Supply (AVS) on higher-wattage adapters 116. PPS matters mainly for Samsung Galaxy phones.
Can I use my Samsung 25W charger with my iPhone? If it's a USB Power Delivery charger with a USB-C port, it will charge your iPhone; Samsung's 25W model offers 5V and 9V USB PD levels as well as PPS 17. It will charge at about the same speed as a 20W adapter.
Will a USA-bought adapter work in India? Apple designs its adapters for 100–240V, 50–60Hz 18, so the electronics work on Indian mains. You'll need a plug that fits Indian sockets safely; avoid loose travel adapters.
Why does my iPhone stop at 80%? That's usually Optimized Battery Charging or a Charge Limit you've set; on iPhone 15 and later you can choose a limit between 80% and 100% 19. iPhone may also hold at 80% when the battery is warm. It isn't the adapter.