I have never noticed someone take difficulty with the conditions amperage/wattage (Though admittedly I'm unsure how often they come up), nor do I consider challenge myself. I am also an electrical engineer. ” But if You need to use your existing laptop charger to bludgeon a person in self defense, https://andersonrojcv.mybloglicious.com/47836300/the-definitive-guide-to-usb-c-charger-block