Car Jump Leads

IF your battery is flat and you cant start your car maybe you can find a kind fellow motorist to assist your start with jump leads, but if your in an isolated remote locale then its ideal to have a phase 4 in one just clip the leads on and it will give you a start and you don't need to call the rescue services out, and if you did not already know the rescue services often impose a limit of 4 or 5 call outs, I had a parasitic electricity leak on a VW Passat so its proved a good purchase I bought mine at Halfords my only complaint and not sure if its totally correct the instructions advised not to connect the clip to the negative lead on the engine but I could not find a clean connection so ignored this instruction so I will go back to the retailer and ask for an opinion as to safe use fot your information the booster cost about £40 and I have no connection with the auto trade this is an honest consumer review