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Historically USB chargers have consumed power when connected to the wall socket, even when not connected to a phone. Some phones have even displayed an alert "D
by Mediterraneo10 6y ago
Historically USB chargers have consumed power when connected to the wall socket, even when not connected to a phone. Some phones have even displayed an alert "Disconnect power supply from wall to save energy" when you unplugged the USB cable from the phone. Do modern USB-C chargers suffer from the same drawback and so shouldn’t be left plugged in all the time?
- mfkp 6y agoI'll have to plug in a power meter to check, but I'd assume the ghost power draw is negligible.
- high_priest 6y agoIt ends beings negligible, when you start to have 10 devices sipping 0.5-1W each.
- mfkp 6y agoDoing some quick math in my head, even at 1w draw each, if they're constantly drawing that 24/7, it would end up costing about 80 cents per month (at $0.11/kWh). The cost of purchasing the chargers easily outweighs that. But I probably only have 5 around the house, so I have no problem spending 40 cents per month.
- hobby-coder-guy 6y agoI’ve witnessed people care about this in the winter - with baseboard electric heaters on in the same room.