Earlier today as I was driving the Check Charging System minder and red battery light came on. No weird noises or odd driving behaviors. Was close to an AutoZone so I pulled in and had a guy test the battery. With engine off battery was at 12.8 or something like that. When I went to turn engine on it dropped to 5.3 or so. He said “oh it’s the battery”. Which was a few years old, so I bought and replaced the battery. The same dash minder and battery light come on still. I was pulled over for a few minutes with cat running and out the car in neutral, lights went off. Put it in drive, lights came back on. Any idea or experience with this?