The latest USB connector (type C - the one with the connector that can go in either way round) allows the lead itself to be "intelligent"
The device to be charged can communicate it's ability to receive charge - at a standard voltage of 5 volts, or at some elevated voltage which the device itself then manages)
Power in Watts is Volts x Amps
5 volts which supports a maximum draw of 3 Amps will therefore supply up to 5x3=15Watts
Your charger is capable of supplying 5V and, if the connected device tells it that it's so capable, it can also supply up to 15 Volts and support a current draw of up to 3 Amps, so a power of 15x3= 45 Watts
That's call very nice and it means you cN charge your phone quicker.
The downside is that charging a lithium battery at high rate might shorten its lifetime. Thats why I try to charge my car overnight on a slow charger. I only use a 90kW charger if I need a little added to complete a long run and even then, avoid charging to much over 80%
Ffsdtui
August 2025
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