Just when you think you understand something: I left my lights on all day
at work last Friday and discharged my battery. Naturally, when I tried to start the engine, I got nothing..not even a click. A co-worker pulled up and we jumped the battery from his running engine, but still nothing. I pulled the dead battery, took it home and put it on a charger for about 8 hours. Next day, reinstalled it, and everything was fine. Can someone explain why the jump didnt work? This episode flys in the face of everything I thought I knew about dead batteries. '96 F150 XLT 5.8L.
Thanks and Aloha!

 

"BLACK MAGIC!!!!"(I just like writing that) You had a poor quality connection at one &/or both of your battery terminals, that probably appeared to be fine. This problem was rectified during the process of removal & re-installation of the battery. Or, the jumpers used were defective, or choice of placement of the jumper connection points.

 

I've been the unlucky one to be driving each of my parents cars when the batteries decided to go, after being seemingly fine. The jump on both took forever, I don't know, but it did. But when I jump my truck, it starts up within 2 minutes of being hooked up. My parents were hooked up for 10 minutes each before they started. So moral of the story, all batteries are different.