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20 W USB-C Power Adapter
Apple's small official charger, cool and frugal, for an iPhone, an iPad or AirPods. An iPhone 18 Pro Max takes 41 min to reach 50%: to go faster, aim for 40 W or more.
- Power
- 20 W
- Ports
- 1 USB-C
- Lowest price recorded
- €19.00 (Apple, on 23 October 2026)
- Dynamic power
- no
- PPS (Samsung, Pixel)
- no
- AVS (iPhone 18 Pro and Pro Max)
- no
- Heat
- 49.5 °C : after 1 h at 20 W, 25 °C ambient, 220 V: 42.1 °C at the front, 49.5 °C at the back (ChargerLAB)
- Measured efficiency
- 85.52%
- Weight
- 54.5 g
- Dimensions
- 37 × 45 × 24 mm
Measurements with devices
- iPhone 18 Pro Max: 19.7 W · 50% in 41 min, 100% in 1 h 56 (ChargerLAB)
- iPhone 17 Pro Max: 18.85 W · 50% in 38 min, 100% in 1 h 54 (ChargerLAB)
- iPhone 14 Plus: 19.5 W · 50% in 32 min, 100% in 2 h 11 (ChargerLAB)
Strengths
- Small and light: 54.5 g (EU version, techtest.org)
- Stays warm, not hot: 49.5 °C at most after 1 h at full power (ChargerLAB)
- Holds its 20 W without weakening for more than an hour
- Almost zero standby consumption: 0.02 W (ChargerLAB)
Weaknesses
- Slow for a large recent iPhone: 41 min to charge an iPhone 18 Pro Max to 50%, versus 15 min with an AVS charger
- No PPS: a Samsung does not charge quickly
- Too weak for a laptop
Where to buy
- Buy on Amazon (affiliate link)
- Apple: €19.00
As an Amazon Associate, I earn from qualifying purchases.
Devices it charges at full speed
- iPhone Air : up to 19 W
- iPhone 15 : up to 20 W
- iPad mini (A17 Pro) : up to 20 W
Sources
- techtest.org – Apple 20 W test (A2347, EU version)
- ChargerLAB – Apple 20 W test (A2940)
- ChargerLAB – full charge, iPhone 18 Pro Max
- ChargerLAB – full charge, iPhone 17 Pro Max
- Apple FR – MD3J4ZM/A
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