If a power strip has multiple USB ports, why can’t they all charge at max power at the same time?
In: Engineering
The reason for this is simply cost/size. They use a transformer to reduce the voltage to 5v from 120v/240v. It’s much cheaper (and smaller) to use a single transformer at a specific wattage say 10w across all the usb ports (so 2a for a single port and then split as more devices are plugged in) than to give each usb port their own transformer.
What you’re asking for is absolutely possible, but the most expensive part of the power strip are those transformers so you’d expect the price to increase at the same multiple of how many usb ports there are. Also the size will significantly increase as well.
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