I have a bushranger air max II, cut the battery clamps off and put an anderson plug on so it could be connected to the back of the Prado where it would then reach all six tyres. May not be the fastest on the market, but its never cut out due to heat, and provides time to have a cool refreshment while waiting.
I did also have a fitting that connected to the one of the low pressure ports on a spare 1st stage for my scuba tank. It would put in about 1psi per second i.e. about 15-20secs per tire, of cold air so I would just reinflate to "cold tyre" presure. Not very practicle for touring as you only have a limited supply of air and have to lug a scuba tank around, but was good for day trips to the beach.