Hi.
The pumps should be within the electrical load capacity of the socket.
IF.. you are concerned about flattening the battery..by using the pump.
Simplest scenario : only pump a tyre once you are almost ready to drive..
Set out the pump near the tyre to be inflated ...extend its flex to within the cars cabin.
Start engine. Let it idle as you plug in the pump..now connected to the tyre valve.
Once the desired tyre pressure is reached
Uncouple the pump from tyre valve.. replace valve dustcap
Unplug the pump.. stow in a safe place.
Continue your journey.
Charlie