I bought a brand new XS D3400 from droppinhz. It measured 12.71V when I got it. Put it in the car. Still 12.71V. The first few days seemed awesome, voltage was always in the 14s when driving. I thought to mysekf, awesome, this is what it's like to have good voltage
However, a week later, and my voltage now measured 12.4V today while driving.
WHY????? I thought the AGM would hold charge longer, recharge faster, and provide me the amps necessary for audio.
I don't have any audio connected yet, and it's disappointing. I'm charging the battery right now and the voltage is coming up.
Am I doing something wrong?