recommendations please

[Gill]

hi,this is not very bushcrafty lads.i have a 4x4 mitsi deli and have fancied getting one of those jump start power packs just in case.i know they come with various devices on them ie light air hose etc,some people i have known over the years have had these probably cheaper ones, and when they have went to use them they have failed them.maybe some of you lads are in the motor trade and could recommend one of these that has been tried and tested .