Sounds like the battery just failed, it's how most go away, a cell will short out or something along those lines, no warning. If the alt is bad the car will only run as long as the battery has enough volts to power it, hence reserve capacity number when you buy the battery, that number is theoretically the time your car will run with minimal accessories if the alt fails. If your jump=starting the car and it runs alright, but you still need jump, the battery is shot. A little tip, buy the most powerful cca and reserve capacity battery you can fit into your battery tray
Thursday, March 16th, 2017 AT 12:42 PM