Saturday morning my car started fine twice I drove it to a friends house it sat for a while then I drove it to the store. When I came back to my car it wouldn't start i asked for a jump and it worked until I turned the engine off. After a few days of jumpstarting it I took it to auto zone and they told me my battery was dead so I bought a new one, but the problems are the same. It runs fine after a jump but won't start without one. I also did the alternator test where you disconect the battery while the car was running and it seems fine. My dashboard voltage reading seems low now that I have a new battery and drops significantly whenever put into park. What is the problem I've been told multiple diagnosis: I bought a bad battery, My alternater could working just not recharging, or I have bad cables and connections. After being told so many different things I would like to know what is wrong and if I actually even needed a new battery.