This air pump is simular to mine I have had mine 3 years now and beats those cheaper ones by a mile.
Just clamp on batt terminials and mostly can reach all around you car and van, also has a adjustment for what ever pressure you need it opens a valve so the air does not go anymore in the tyre when reached at the pressure you selected. My 14 inchs light truck 8 ply tyres on the van take app 3 or 4 mins to put 60 psi into.
YEP have exactly the same here.. After having a flat out in the middle of no where I soon woke up to myself
With tyre repairs even if they are very temporary..
Like the larger capacity..
Strange part is I.ve helped others out with flats..
Need to keep stock of repair kit..
Saw exactly the same in Auto one for just under $400.