If a power strip has multiple USB ports, why can’t they all charge at max power at the same time?
In: Engineering
Apologies, but this sounds like a question specific to your power strip that you are asking for a ubiquitous answer for.
A power strip with USB ports can be designed so each port could output whatever power the designer desired and USB supports.
Your specific power strip probably has something like a 5V 10W supply shared amongst all USB ports. Regardless of how many USB plugs are available or how many things you have plugged in, if it can only supply 10W, you’ll only ever get 10W out. Maybe that is a 2A draw for one phone or a .5A draw for 4 phones.
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