Guys, Do you know if these Jump Starters / Boosters through the cigarette lighter work on the Mazda 6 ? ( 2007 Petrol , 2.5 ),

Also any recommendation on a portable booster. ( 2 - 3 kg as I want to keep it in my car, There are some good larger ones at 8 kg)

 

I have one of those units and they are a load of rubbish UNLESS you pay good money for one. You will get a good quality battery for the same price as a booster pack and save yourself the messing around.