Purchased my 2019 V3 a few months ago with 3000 miles. Car had been sitting on the lot for 2-3 months prior. In the next few weeks the car acted like it didn’t want to start a few times and it didn’t start on one attempt. The onstar diagnostic report also told me my battery was low. So I asked the dealer to replace the battery under warranty. They kept my car 3 days but said the battery tested good so they just charged it. My question is what battery voltage should I be getting on the dash? It almost always reads 12.4-12.5 when I’m driving and sometimes it gets as high as 13.6. Is 12.4 ok for this car? Seems kinda low to me. After they charged the battery it was in the 13s and 14s for a few days but now it’s back to 12.4-12.5 which is what it was before they charged it. Should I be concerned? I’m assuming the alternator is good since car has less than 4000 miles. Thanks.