Had another guy that had one of our batteries in his car. The alternator failed and of course he failed to notice the red light on the dash. Car quits when the battery voltage dropped below minimum voltage to power the ignition system.
He has the car towed to the dealer. Dealer replaces the alternator, and rather than tell the guy that the battery will have to slow charge overnight, they tell him the battery is bad and charge him for a new one.
He brings the battery back and demands a refund. Sorry pal, that's not how battery warranties work, it's a pro-rated replacement warranty, not a money back guarantee.
When he's told I can't give him a refund, he's too pissed off to listen or realize he was sold a battery he didn't need by the dealer, it just needed charging. Storms off in a huff.
I put the battery on charge overnight and it tests fine in the morning.
Edit:
To give this a bit more context, this was not too long after maintenance free batteries had replaced lead acid batteries. A lot of older folks didn't know that you can't fast charge a maintenance free battery, that was a trade-off that the calcium hybrid plate construction had to allow it to be maintenance free.
Gas stations of old used to have sandwich board signs out by the pumps advertising fast charging in 30 minutes. If overdone, it would actually boil the electrolyte in the cells.
As mentioned before, Gramps was OCD before it had a name and the Depression had made him a world class penny pincher, and battery maintenance was one of his OCD bullet points. He did everything possible to get max life out of a battery.
This was back when you had to check the electrolyte level in each cell monthly and top it off as needed with water. Most peeps just used tap water. Gramps knew the minerals in tap water weren't good for battery longevity, he used distilled water. But he didn't buy it, he collected it for free.
A lot of folks don't realize that distilled water can be made two ways. One by boiling the water and condensing the vapor back into a liquid. The other is condensing water vapor (humidity) out of the air.
He would save the glass 1 gallon jugs vinegar came in back then and put a funnel in it and place it under the window unit A/C in the summer. Change the jug when full. Save the water for filling batteries.
He also knew to keep the top of the battery clean, so you didn't have the gunk that is present on most batteries create a parasitic drain.
It was not unusual for Gramps to get 10 years out of a battery back then and then grumble when he had to replace it.
I often wondered if you gave him a quarter if he couldn't squeeze a booger out of George Washington's nose.
