The new Macbook Air that Apple just announced now has a separate power brick and cord. The brick's output is 30 watt USB-C. Now all you need is a 12 volt adapter with
at least 30w USB-C output and you can skip the inverter and brick. Something like this.
Voila! No more DC -> AC -> DC.
at least 30w USB-C output and you can skip the inverter and brick. Something like this.
Voila! No more DC -> AC -> DC.
