Jeep Grand Cherokee 3.0 CRD 2006 Flat Battery 8 times in one year! Help!?

Signal P

New Member
My Jeep Grand Cherokee 3.0 CRD 2006 OVERLAND UK keeps having intermittant flat batteries. It has happened about 8 times. The Jeep garage has usually not charged it, taken it on a trailer to there and then they try and diagnose the problem. When doing this they check what is drawing power from the battery when off and locked (always nothing draining it) then they test the alternator and claim it is fully functional and then check every electrical componant is working correctly, which it always is. Then they send it back fully charged and all we can do is wait until it next breaks down. They have also changed the battery about 3 times and told us "we have never experienced this problem before".
Well today was the last straw, it refused to start once again with the battery power incredibly low. I called jeep's breakdown service and they would only charge it, not take it in. That is unacceptable. Therefore I am going to charge it myself and take it into them.
Does anyone know the problem?
 
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