Here are some pros and cons of using a DC-AC power inverter for charging a Surface:
Pros
Optimal Performance: By converting from 12V DC to 110V AC, you can use your original Surface charger to charge your device for optimal speed and safety.
Universal Compatibility: You can use any AC charger to charge any device with a single purchase.
Cons
Required additional Surface power supply: You must carry a Surface charger or spare a Surface charger in the car to connect to the inverter to charge your device.
Noise: All inverters come with a small or big fan, depending on the power output they can provide.