Amp Nerd

A power bank can have plenty of charge remaining and still stop powering a small accessory.

A charger labeled 65W does not consume 65W continuously just because it is plugged in.

A USB-C dock can charge a laptop while producing no picture on a connected monitor.

USB-C is designed to be reversible.

A compact GaN charger can feel warm even when it is more efficient than an older design.

Wireless charging is convenient, but not all electricity entering the pad reaches the battery.

Fast charging is usually fastest during only part of the battery refill.

A cable can be excellent at charging and ordinary at transferring files.

Your laptop charges normally until you plug a phone into the same charger.

A 100W label is a capability claim, not a promise that your laptop will receive 100W.