If the car won't start it is usually the battery, starter or could be the altenator. What are the symptoms when you try to start it, is there any power?
ALTINATOR OR STARTER. JUMP START CAR, TAKE POSITIVE CABLE OFF BATTERY,IF CAR DIES IT IS ALTERNATOR. GOOD LUCK
If the battery and alternator are both good, Test them to be sure, then you need to take a multimeter and verify that the power from the alternator is actually reaching the battery. It could be a simple wiring problem
battery is shot?
Sounds like your charging system isn't working and you are running off battery power until the battery goes dead. Have the battery and the charging system tested to determine what part is at fault.
starter, solonoid, ignition, battery. if it clicks when you turn the key then the battery is really dead or its the starter the battery could still be jumped if its the battery.
The Battery is dead... same thing happend to me... the only thing keeping your car going is the Alternator trying to charge everything... my car did that, ran every bit of 5 mins then shut down cause the battery barely could handle it, then jumped it again and kept foot on gas and it stayed running, turn car off then car died and wouldn't start again unless i jumped it.
could be the alternator. could be the battery, the alternator charges the battery but does not stop the battery holding a charge.could also be a bad starter motor. take alternator off and have it tested. most places will test for free
could be a short or a parasitic drain in the electrical system... to little info to tell what it is. could be bad earth from battery
Could be, the engine is seized, the starter is bad, dirty or loose battery connections, battery in vehicle being jumped is stone dead.
i say that your engine broke down or that your transmission broke
A battery that is only at 50% is not a good battery unless it just needs charging.