Jeep Cherokee crd limited - electricl fuilt - big_kev

hi i have a cherokee jeep.its cost me loads of money ever since i took it back to a jeep specialist in birmingham iv had nothing but problems with it .now i have a new problem but have no more money to spend on it. after leaveing my jeep at a railway car park over a weekend i tried to start my jeep but it will not start i had the rac look at it he sead theres a electrical fuilt he tested the battery and sead the charge rate was fine but.theres drain of 0.7 amp some were .please help eney one .thank you