USB-A 12 W = standard 5V/2.4A. QC 3.0 raises voltage to 9V/12V, reaches 18 W on QC-Samsung/Xiaomi. iPhone does not benefit — Apple fast charging needs USB-C PD.
Yes, with USB-A-to-USB-C cable, only at slow 5 W. Fast charging on iPhone 15+ needs USB-C PD.
Any USB-A 5V/1A or 5V/2.4A — AirPods case draws max 5 W. Quick Charge not supported but does no harm.
iPhone 5 to 14 use Lightning. With Lightning-to-USB-A cable still usable. USB-A 12 W charges at 5 W (safe but slow).
Yes — Bluetooth headphones, smartwatches, e-readers, cameras, older phones use USB-A. Stays relevant for existing devices despite USB-C standard.
Guide & know-how
USB-A chargers at RPD — proven USB-A power adapters at 5V/2.4A standard for iPhone 14 and older, Android with Micro-USB, Bluetooth headphones, cameras and any legacy device. We stock simple 12 W single-port adapters, Quick Charge 3.0 up to 18 W for Samsung Galaxy and Xiaomi, plus 2-port adapters for charging phone and smartwatch or headphones at once. Advantage — universally compatible with any USB-A-Lightning or USB-A-Micro-USB cable you still have. Ships from Basel, same-day dispatch by 4 pm CH-wide, free above CHF 15, 2-year Swiss warranty. Invoice payment available (credit check by Powerpay).
For iPhone 14 and older with Lightning USB-A 5V/2.4A (12 W) is the standard choice. Bluetooth headphones (AirPods, Beats, Sony), smartwatches (Apple Watch via Lightning charging dock, Garmin), e-readers (Kindle) and older Android phones with Micro-USB also charge perfectly. For fast charging on iPhone 15+ or MacBook you need USB-C PD — see our matching categories.
USB-A 5V/2.4A delivers a steady 12 W — enough for standard charging speed on every phone. Quick Charge 3.0 dynamically increases voltage up to 12 V and reaches 18 W on QC-compatible devices — primarily Samsung Galaxy (older S-line, A-line) and Xiaomi. iPhone does NOT benefit from QC, it stays at 12 W.
iPhone with Lightning + USB-A 12 W = about 2.5 hours for a full charge. Galaxy S10/S20 with QC 3.0 + USB-A 18 W = about 1.5 hours. Bluetooth headphones (AirPods Pro case without MagSafe) = about 1 hour from empty to full at 5 W. Smartwatch charging pads are often USB-A 5 W. Cameras (Canon, Sony, Fujifilm) charge in-body batteries at 5 W via USB-A.
We only stock USB-A adapters with CE marking and built-in overload, overvoltage and short-circuit protection. Flame-retardant PC housing, Swiss Type J plug (10 A), copper coil winding. Even after years of heavy use no buzzing or overheating.
Shipped from our Basel warehouse — A-Post 1–2 working days, express next business day or free pickup in Basel, Aarau or Olten. 2 years Swiss warranty, 14-day returns, recyclable packaging. Invoice payment available (credit check by Powerpay), best-price guarantee CH.
