Prior to our trip to East Harbor State Park, I charged up the batteries for the RC cars.
As the LiPo battery for the Land Rover was charging, I heard a short, sharp, sound., like a ruler hitting a desk. It wasn’t very loud, and sounded like the crack from the discharge of a Van Der Graaff generator.
This kind of thing.
I went to check on the charging battery, and found that it looked inflated. That’s real bad. I turned off the charger, gingerly took the battery outside, and threw it in the yard where it couldn’t damage anything if it exploded or ignited. Which, it apparently did at some point during the night.
It appears that since several batteries were going to be charged, the charger was set for a 4S battery, instead of a 3S. The battery that was being charged had a high enough voltage that the charger didn’t recognized the problem.