I was just thinking if you are on your computer anyway would it just use some of the excess electricity that your computer would have wasted or would it be worse than charging your phone from a charger while using your laptop separately.
I was just thinking if you are on your computer anyway would it just use some of the excess electricity that your computer would have wasted or would it be worse than charging your phone from a charger while using your laptop separately.
There is no such thing as ‘excess electricity’ in a modern (switching) power supply unit. They use as much power as is needed. There is a few percent of loss in the device, no big deal.
Some desktop computers are less efficient because they have too strong psu’s (lots of reserve for your future “gaming” graphics card) built in.
I guess being on a laptop I don’t have to worry about the PSU being less efficient.