The iPhone 15’s switch to USB-C has many wondering about the optimal charger for the fastest possible speeds. Unlike the complexities of some Android phones, choosing the right charger for your iPhone 15 is refreshingly straightforward.
The Easiest Solution: Anker 511
For the quickest and most convenient solution, the Anker 511 Nano 3 is an excellent choice. This compact charger, roughly the size of Apple’s old 5W brick, delivers up to 30W via USB-C and features foldable prongs for easy portability. It’s perfect for maximizing charging speed on the larger iPhone 15 Plus and iPhone 15 Pro Max. For the smaller iPhone 15 and 15 Pro, the 20W Anker 511 Nano Pro (without folding prongs) offers a slightly more budget-friendly option.
Alt text: A small, white Anker 511 GAN charger plugged into a wall outlet.
ChargerLAB Testing Validates Performance
While personal testing on the iPhone 15 series wasn’t possible for this article, ChargerLAB’s comprehensive testing provides valuable insights. Their findings reveal that the iPhone 15 and 15 Pro max out at around 20W, while the iPhone 15 Plus and 15 Pro Max, with their larger batteries, typically charge at around 26W from empty. ChargerLAB’s reputation for accuracy and their use of tools like the Power-Z KM003C tester make their results highly credible.
Understanding iPhone 15 Charging Behavior
Technically, the iPhone 15 Pro Max and 15 Plus generally charge on the 9V rail at about 3 amps, while the smaller iPhone 15 and 15 Pro use the same 9V rail but draw around 2 amps. All models initially charge at 9V, eventually dropping to 5V for trickle charging to maintain battery health. This behavior is consistent with previous iPhones, suggesting that Apple hasn’t significantly altered its charging circuitry despite the move to USB-C.
Alt text: A graph showing the charge curve of an iPhone 14 over time, highlighting the voltage and amperage.
Any Compatible USB-PD Charger Will Work
The key takeaway is that charging an iPhone 15 is remarkably simple. While the Anker 511 is a great recommendation due to its size, portability, and cost, Apple’s adherence to the USB Power Delivery (USB-PD) standard means virtually any quality USB-PD charger delivering 9V at 3 amps (or 20W to 30W) will provide optimal charging speeds. This includes chargers from brands like Dell, HP, Lenovo, Apple, Ugreen, Nekteck, and Satechi. Multi-port chargers are also viable options.
Alt text: A variety of GAN chargers plugged into wall outlets and power strips, showcasing different sizes and port configurations.
Simplicity Over Complexity
While iPhone 15 charging speeds might not match the 45W capabilities of some Android phones, the simplicity is a major advantage. There’s no need to hunt for specialized chargers or cables with specific amperage ratings. Choose a trusted brand within the 20W to 30W range and enjoy hassle-free fast charging for your iPhone 15.
