Convert vehicle power into household power with the Duracell 400 Watt High Power Inverter. Charge AC and USB devices simultaneously with 2 AC outlets and one 2.1 Amp USB port. The 400 Watt inverter includes two 3 foot power cables for various applications. Easily charge devices up to 175 Watts of power from your cars DC port with the included It's safe to charge but I wouldn't game using it. When on the AC block the g14 has passthrough, but on USB-C the battery is still being used. If you spend a lot of time plugged in USB-C at full charge it will degrade the battery quickly. The issue here is that you can theoretically charge a tablet (or toothbrush), through an appropriate USB port on a hub, or you can connect the hub a different way to attach a pen drive to a computer (my toothbrush can't use a pen drive). But you can't do both simultaneously. The reason for that last point is the gist of the question. To charge your laptop in a car: Turn on your engine. Plug the car charger into your vehicle's charging port (you might not even need a car charger since many newer vehicles have USB ports you can plug into) Plug the USB-C connector into your laptop. Note: Never leave your laptop unsupervised in a vehicle and clear view. In order to charge USB devices when your Mac is off/lid is closed the power adapter must be connected to your Mac. None of the 3 USB ports on my MacBook Pro 17 inch early 2011 will charge when the computer is off. All of the USB ports will charge A NON APPLE PHONE (HTC One V) when the computer is asleep. A USB-C cable is a recent type of USB connector that's easier to use and more powerful than older USB types. USB-C cables can be used to quickly charge many popular devices, including the MacBook .

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