5 ms·

Try plugging a modern smartphone in to an old 5 watt USB socket, the charge indicator will probably indicate charging, but it probably won’t do much unless the

Try plugging a modern smartphone in to an old 5 watt USB socket, the charge indicator will probably indicate charging, but it probably won’t do much unless the phone is completely off.

NullPrefix 5y ago
Regular USB is 5V * 0.5Amps = 2.5Watts It's called slow charge and it's healthy for your battery