Anker Nano is designed with a 20W output to match the max input of iPhone 12, so you can provide exactly as much power as your iPhone needs. Charge iPhone 11 to 53% in just 30 minutes - that's up to 3x faster than with an original 5W charger. Measuring just over 1 inch on each side and weighing about the same as an AA battery, this is a high-speed charger with unrivaled power and portability.