2002 dodge stratus loss power while on expressway. 36 hours before this happened, my daughter turn car off but left ignition on. 24 hours passed before i noticed. tried to turn car on but battery was dead. called for a jump. car started but when turn off and turned on again would not start. guy told me this time let it run for 30mins or so before i turn it off. did that but before turning engine off i drove to autozone and had then test battery and altenator charge w/ handheld unit. 2nd guy at autozone said both were charged and i should not have any problems. fastforward 36 hours later i lose power while driving on interstate. i cost to a stop at a roadside tire shop (lucky i guess). 3rd guy test battery there and says battery is charged must be something else. so i had it towed home cause they couldnt fix at that type shop. now wondering what is truely wrong and would love your opinion. can you help?