Battery Voltage Analysis Unlocking the Secrets of Fluctuations

The fluctuation happens when parked and driving while increasing engine RPM's. ... First check all the wiring connections to the alternator ... You check connection at battery? The alternator/ regulator and battery are a loop. Regulator reads battery and knows how much at test rpm of ... I don't drive it that often. Maybe it's normal and something to do with recharging the battery after extended idle periods. Has anyone else ... The issue i'm having is that while driving i'll notice the battery voltage meter drop and the exterior lights will dim significantly. I've been monitoring my voltage while driving because I was having some charging issues, I tightened some battery connections and now I'm ... I replaced the original battery this past January and had no issue until this past weekend in the middle of a 900-mile road trip. While cruising ... Make sure your cable from alternator to battery is absolutely clean and makes good contact at the alternator. Always use dielectric grease on ... Depending on the RPMs and electrical load it will fluctuate up and down. It should be in the 12-14v range most of the time though. Its only ... ... and coming back on, no trouble codes and not all the time. I was in the power room today when it happened, the battery voltage drops ... When I start my car, my volt meter is showing a steady 13.8 volts. However, once the car heats up, or after 10 minutes driving, it drops to 11.9 ...