I have 3 USB-C devices, a computer, a tablet and a phone. They all have different chargers but the same port. What happens if I plug in the wrong one?

Question

Each of my USB-C enabled devices charge via the plug. Each came with a USB-C chargerbut my phone does not need much power so the power adapter is small.

My laptop needs a lot of power and its charger is more powerful.

What happens if I mess up and I plug my phone in the PC charger? Does the phone blow up?

And what happens if I try to charge my PC with my phone charger will it catch fire?

Answer 1

Your devices will charge and no damage will occur.

If you plug a charger in which has a lower current rating the devices will charge slower.

If you plug a charger in which has a higher current rating the devices will charge at their designated speed.

USB-C negotiates the desired power delivery profile, starting off at 5 volts, 2 amps.

Answer 2

Any pair of USB-C device and charger will start at normal-level charging, and some higher-power chargers will negotiate higher-level charging if the device can handle it. It's probably safe, but will be slower charging.