I have a 2013 Mazda 6 and I attempted to put a dead battery on my car to charge it up while my car was running so I took the negative off my battery and hooked it to the dead battery but when I unhooked the positive and went to hook it to the dead battery sparks flew and my car turned off and now even with my car hooked up to my battery that wasn’t dead it won’t start. It won’t make any sound or anything just the lights come on. How do I fix it
Oct 23, 2026 at 11:03 PM