The Battery's Story Unveiling Voltage Fluctuations While Driving

Observing the gauge while driving is not going to tell you the battery's voltage or charge level, it's telling you how many volts the alternator ... It's normal. Modern cars will fluctuate voltage depending on load and battery charge state. Hope you got the answers you were looking for, but ... it is normal. THe computer controls the alternators output. (to save gas). THis is based on the batterys charge, temp, and vehicle electrical ... New cars can have an active battery/alternator management system and this behavior as you describe can be completely normal. It's completely normal for voltage to fluctuate based on engine load. If the car needs more power (such as during acceleration), it may dial back the charging ... I got in the car. Checked voltage before and after starting It. Voltage hits 13.7 volts for a breif second after starting then drops to battery ... Hello, does your battery gauge fluctuate while driving? I do not know what normal operation looks like on the battery meter. I am thinking ... Nope. That pretty much sounds like a dead battery. It sounds as though one of the cells has a short in it, which is causing your rapid ... Well, I disconnected then reconnected the leads myself...then the truck started right up, but the battery gauge/meter started fluctuating. The ... ... 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 ...