Ok, so I have been somewhat perplexed by this. I'm only ever getting 12.9 to 13 volts after warmup. I have gone through and looked at the live data from the body control module. When looking at the live data when the car is running, the Battery Monitor/ Regenerative Charge State always remains "Inactive". So my batteries and not getting properly charged? I'm new to this with little knowledge of the sort, I just feel like something is not right, I have always had a charge state of around 14.2 volts and now I can't get above 13.