Okay, here's a puzzler, and I hope someone out there understands what I'm trying to say, and can give me a straightforward answer.
The battery is in my SUV, a 2002 GMC ENVOY 4WD, is dead every morning, but it's a good battery, had it in another car, worked great!
Now if I connect my battery charger to the dead battery, with the SUV's positive and negative cables connected to the battery, my charger goes completely dead, no juice whatsoever.
But, if I remove the SUV's negative battery cable from the battery then hook up my charger it will work. All lights, horns, whistles, etc, and it'll charge the battery.
Now my query is, why? Why do I have to disconnect the negative battery cable in order for my charger to work AND charge the battery?
Tuesday, December 24th, 2019 AT 11:20 PM