New Moto Guzzi Door Mats Available Now
About doubble what it claims it uses on the back of the device, @12volts I'd be surprised if this is much over 2 amps.
Hardwired to your 12V system or plugged in with manufacturer's cord?Most manufacturer's cords are fused.
If you have the 550 there is a fuse already built into the docking station. No need to add another. (According to Page 12 of the on line owner's manual.)