sounds thow your battry has ded cell if only goes flat when cold,get a test light 12v bulb car one not led,open bonet then lock the car disconect only the earth lead of your battry and use the test light to bridg betwen the earth lead and the battry earth post ,the bulb should not light up if it does you got a drain on the battry.hazards pos relay falty or you spiking system when jumpstarting fix that first it will drain the battry,
steven,s
January 2012
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