My son borrowed a car and the battery seemed fine, car started fine every time. However it died after my son left some overhead lights on in the car overnight. We jumped it, and he drove about 20 miles, but it didn't seem to take any charge, so it had to be jumped again.
It has enough juice to turn on lights and the dash, make the noises when the key is in the ignition, but we just get the clicks rather than the engine trying to turn over.
Hooked it up to a charger for a few hours, same thing.
So my question is does draining a battery completely result in it not wanting to take a charge anymore? Or is this a condition that mostly affects batteries that were on their last legs to start with? Can a battery in this state be revived?
So I removed the battery and cleaned the contacts but hooked up the battery to a new NOCO G3500 smart charger. From the start, I noticed some gas being released from at least one side of the battery (it has two caps, each one covers 3 cells). I removed the caps, and could see that each of the cells was bubbling as it charged, except for one. That one was on one side of the battery. So 5/6 cells seem to be taking a charge. After 24 hours on the charger, the NOCO was still showing 75% (flashing). I removed the charger and it registered ~11.25 volts. The next day, it was showing ~10.5.