HKYPD3.1 140W 28V/5A Laptop Car Charger USB C 12V-24V DC Adapter for MacBook Pro/Air 16" 15" 14" 13" M2 M2 Max,Surface,MSI,Dell,Lenovo,HP,Huawei,XIAOMI Laptop,Asus ROG Ally,Chromebook,Steam Deck

I don't know why any mobile chargers that claim to output any amount of power past 40w never live up to it, but this one sure does. It was able to supply the full 100W my battery pack is able to accept. I'm confident it can supply more as advertised. I just don't have anything that can use that much USB C power.

For you road warriors out there who occasionally (or not so occasionally) have to charge your laptops or tablets while on the road, this charger is a great option. I have a DC/AC 120V inverter/adapter that I have been using to charge my laptop in my vehicle when needed that works but gets VERY (and somewhat disturbingly) warm with use. I tested this version on 3 laptops which come supplied with 65W USB-C chargers (a Dell XPS, a Dell Latitude, and a Microsoft Surface Pro 9).It is superior to the 120V inverter as you only have to have one cable/charge block instead of two, and it avoids having to either dig through your bag for your adapter or carry a second adapter in your vehicle. It is also low-profile (the block part is smaller than the inverter and on similar charge cables) and both cables are a good length. I plugged the DC end into the port in my center console and there was enough length to either run the cable out the side and have the block part outside the center console (my first test to make sure it does not get too warm) or leave it in the console and have the USB-C side extend out to plug into the laptop. I had it plugged in for 45 minutes during a drive and it did not get noticeably warm, so I would probably leave it in the center console. One note is that it was a snug fit in the vehicle's 12V port, I had to be firm when plugging it in to make sure it worked. Not sure if this is specific to my vehicle, but is something to watch for.On the other hand, it is only useful for charging/powering things that have a USB-C power port, so it is potentially less flexible than the 120V inverter. I have personally never used my 120V inverter for anything but charging a laptop, so it works fine for my purposes.

The ROG Ally charging without a Windows "Low Power Charger" warning is a bigger deal than you may think: Some devices can be pretty picky about their chargers, and throw a warning because the charging was slow to ramp up, handshake, or otherwise get to full-speed charging for the device. This didn't have that issue, which is good.I also am glad to see them specifically say it's good for 12V to 24V. I drive a Tesla, and later model Teslas can put out over 14 volts on the accessory port sometimes (or so I've heard and been told). Better safe than sorry, I look for devices that specify their voltage range or input tolerances.No issues at all charging my test devices. It now lives in my glove box, just in case I need to charge something that the built-in ports on my car can't handle.