Battery Drain Issues-2021 Ram 1500 Laramie V8, Hemi Etorque

[elway07]

I have had no issues with my 2021 Ram 1500 Laramie-V-8 Hemi ETorque until about a week ago. I have approximately 67000 miles on my truck and started noticing about a week ago my push start ignition seemed weak. Yesterday, my vehicle would not even start. I was able to successfully jump start it and took it to a shop where they advised it was a dead battery. I had it changed, but noticed the voltage of the battery is consistently low at 13.1 volts. I am worried there is a larger issue. I have an appointment this week, but wanted to see what others had to say. My one question is where should the battery voltage meter be at consistently?